default-providers: define keymaps virtual runtime provider

VIRTUAL-RUNTIME_keymaps is defined in busybox init manager and also in
some package groups. Defining distro features in recipes is wrong.
Also this is not directly related to init manager.
So move all these definitions to default-providers.inc

(From OE-Core rev: 00f667bb5007a372950a137bf9e8b0e62f44f7d6)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/conf/distro/include/default-providers.inc

@@ -29,6 +29,7 @@ VIRTUAL-RUNTIME_getopt ?= "util-linux-getopt"
 VIRTUAL-RUNTIME_base-utils ?= "busybox"
 VIRTUAL-RUNTIME_base-utils-hwclock ?= "busybox-hwclock"
 VIRTUAL-RUNTIME_base-utils-syslog ?= "busybox-syslog"
+VIRTUAL-RUNTIME_keymaps ?= "keymaps"
 
 #
 # Default recipe providers

meta/conf/distro/include/init-manager-mdev-busybox.inc

@@ -3,5 +3,4 @@ DISTRO_FEATURES_BACKFILL_CONSIDERED:append = " systemd sysvinit"
 VIRTUAL-RUNTIME_dev_manager ??= "busybox-mdev"
 VIRTUAL-RUNTIME_init_manager ??= "busybox"
 VIRTUAL-RUNTIME_initscripts ??= "initscripts"
-VIRTUAL-RUNTIME_keymaps ??= "keymaps"
 VIRTUAL-RUNTIME_login_manager ??= "busybox"

meta/recipes-core/packagegroups/packagegroup-base.bb

@@ -39,9 +39,6 @@ PACKAGES = ' \
             \
             '
 
-# Override by distro if needed
-VIRTUAL-RUNTIME_keymaps ?= "keymaps"
-
 #
 # packagegroup-base contain stuff needed for base system (machine related)
 #

meta/recipes-core/packagegroups/packagegroup-core-boot.bb

@@ -9,9 +9,6 @@ PACKAGE_ARCH = "${MACHINE_ARCH}"
 
 inherit packagegroup
 
-# Distro can override the following VIRTUAL-RUNTIME providers:
-VIRTUAL-RUNTIME_keymaps ?= "keymaps"
-
 EFI_PROVIDER ??= "grub-efi"
 
 SYSVINIT_SCRIPTS = "${@bb.utils.contains('MACHINE_FEATURES', 'rtc', '${VIRTUAL-RUNTIME_base-utils-hwclock}', '', d)} \