arm/generic-arm64: use latest linux-yocto

We were pinning generic-arm64 to 5.10 because 5.14 was hanging during
boot in qemu, but this appears to have been fixed in 5.15.

Unpin the kernel to use 5.15, and drop the defconfig patch which has
been upstreamed.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm/conf/machine/generic-arm64.conf

@@ -6,9 +6,6 @@
 require conf/machine/include/arm/arch-armv8a.inc
 
 PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
-# Newer versions of the kernel are not booting on QEMU.  Hold it back to a
-#  known working version until it is determined why
-PREFERRED_VERSION_linux-yocto ?= "5.10%"
 KBUILD_DEFCONFIG = "defconfig"
 KCONFIG_MODE = "--alldefconfig"
 KERNEL_IMAGETYPE = "Image"

meta-arm/recipes-kernel/linux/linux-yocto/defconfig.patch

@@ -1,81 +0,0 @@
-Upstream-Status: Submitted
-Signed-off-by: Ross Burton <ross.burton@arm.com>
-
-From 976241eed25267bae5a535c01971c7c81ddcf38b Mon Sep 17 00:00:00 2001
-From: Ross Burton <ross.burton@arm.com>
-Date: Wed, 13 Jan 2021 15:32:22 +0000
-Subject: [PATCH 2/5] arm64: defconfig: drop unused POWER_AVS option
-
-Commit 785b5bb41b0a ("PM: AVS: Drop the avs directory and the
-corresponding Kconfig") moved AVS code to SOC-specific folders, and
-removed corresponding Kconfig from drivers/power, leaving original
-POWER_AVS config option enabled in some defconfigs.
-
-Remove the options, which have no references in the tree anymore.
-
-Fixes: 785b5bb41b0a ("PM: AVS: Drop the avs directory and the corresponding Kconfig")
-
-Signed-off-by: Ross Burton <ross.burton@arm.com>
----
- arch/arm64/configs/defconfig | 1 -
- 1 file changed, 1 deletion(-)
-
-diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
-index 6d84761d1285..9bb5a97d24f0 100644
---- a/arch/arm64/configs/defconfig
-+++ b/arch/arm64/configs/defconfig
-@@ -514,7 +514,6 @@ CONFIG_GPIO_PCA953X_IRQ=y
- CONFIG_GPIO_BD9571MWV=m
- CONFIG_GPIO_MAX77620=y
- CONFIG_GPIO_SL28CPLD=m
--CONFIG_POWER_AVS=y
- CONFIG_QCOM_CPR=y
- CONFIG_ROCKCHIP_IODOMAIN=y
- CONFIG_POWER_RESET_MSM=y
--- 
-2.25.1
-
-
-From 07fbdbcb768d70ccd8e7fe66aee9f4705a60400b Mon Sep 17 00:00:00 2001
-From: Ross Burton <ross.burton@arm.com>
-Date: Wed, 28 Jul 2021 16:05:56 +0100
-Subject: [PATCH 3/5] arm64: defconfig: set CONFIG_USB_CONN_GPIO=y
-
-Since 10a7b37b5b ("arm64: Update default configuration") PHY_TEGRA_XUSB
-is set to y. That option needs USB_CONN_GPIO to also be y not m, so
-set USB_CONN_GPIO explicitly to y to reflect reality.
-
-Signed-off-by: Ross Burton <ross.burton@arm.com>
----
- arch/arm64/configs/defconfig | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
-index 6d84761d1285..84a75ed7e167 100644
---- a/arch/arm64/configs/defconfig
-+++ b/arch/arm64/configs/defconfig
-@@ -727,7 +727,7 @@ CONFIG_SND_SOC_WSA881X=m
- CONFIG_SND_SIMPLE_CARD=m
- CONFIG_SND_AUDIO_GRAPH_CARD=m
- CONFIG_I2C_HID=m
--CONFIG_USB_CONN_GPIO=m
-+CONFIG_USB_CONN_GPIO=y
- CONFIG_USB=y
- CONFIG_USB_OTG=y
- CONFIG_USB_XHCI_HCD=y
--- 
-2.25.1
-
-
-diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
-index 6d84761d1285..0f45921cf5b2 100644
---- a/arch/arm64/configs/defconfig
-+++ b/arch/arm64/configs/defconfig
-@@ -683,7 +683,6 @@ CONFIG_DRM_PANFROST=m
- CONFIG_FB=y
- CONFIG_FB_MODE_HELPERS=y
- CONFIG_FB_EFI=y
--CONFIG_BACKLIGHT_GENERIC=m
- CONFIG_BACKLIGHT_PWM=m
- CONFIG_BACKLIGHT_LP855X=m
- CONFIG_LOGO=y

meta-arm/recipes-kernel/linux/linux-yocto_%.bbappend

@@ -3,7 +3,6 @@ ARMFILESPATHS := "${THISDIR}/${PN}:"
 COMPATIBLE_MACHINE:generic-arm64 = "generic-arm64"
 FILESEXTRAPATHS:prepend:generic-arm64 = "${ARMFILESPATHS}"
 SRC_URI:append:generic-arm64 = " \
-    file://defconfig.patch \
     file://tcpci.cfg \
     "