arm-bsp: Introduce ARM N1SDP platform

- Add support for N1SDP platform.
- Build Linux 5.4 from linaro tree for N1SDP platform.

Change-Id: I12e5169da9c2bab946eb7e49fe6cc7bbb07d182b
Issue-Id: PLATFORMS-3134
Signed-off-by: Khasim Syed Mohammed <khasim.mohammed@arm.com>
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-bsp/conf/machine/n1sdp.conf

@@ -0,0 +1,19 @@
+# Configuration for Arm N1SDP development board
+
+#@TYPE: Machine
+#@NAME: N1SDP machine
+#@DESCRIPTION: Machine configuration for N1SDP
+
+TUNE_FEATURES = "aarch64"
+
+require conf/machine/include/arm/arch-armv8a.inc
+
+KERNEL_IMAGETYPE = "Image"
+
+IMAGE_FSTYPES += "tar.bz2 ext4"
+
+SERIAL_CONSOLES = "115200;ttyAMA0"
+
+# Use kernel provided by linaro (Contains support for SCMi or HDMI)
+PREFERRED_PROVIDER_virtual/kernel ?= "linux-linaro-arm"
+PREFERRED_VERSION_linux-linaro-arm ?= "5.4%"