grub-efi: Provide target architecture for 32-bit ARM.

(From OE-Core rev: 65f9fb788371a9a08e3b0e6febecb9cc2aaeefe7)

Signed-off-by: Kristian Amlie <kristian.amlie@northern.tech>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/grub/grub-efi_2.02.bb

@@ -25,6 +25,9 @@ python __anonymous () {
     elif re.match('aarch64', target):
         grubtarget = 'arm64'
         grubimage = prefix + "bootaa64.efi"
+    elif re.match('arm', target):
+        grubtarget = 'arm'
+        grubimage = prefix + "bootarm.efi"
     else:
         raise bb.parse.SkipRecipe("grub-efi is incompatible with target %s" % target)
     d.setVar("GRUB_TARGET", grubtarget)