arm/efi: Switch to arm64 linux loader

The arm64 and arm linux kernel EFI-stub support presents pretty much
identical interfaces, so the same linux loader source can be used for
both architectures.

Switch 32-bit ARM UEFI platforms over to the existing EFI-stub aware
loader initially developed for arm64.

This *WILL* stop non-efistub Linux kernels from booting on arm-efi.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

grub-core/Makefile.core.def

@@ -229,7 +229,6 @@ kernel = {
   ia64_efi = kern/ia64/cache.c;
 
   arm_efi = kern/arm/efi/init.c;
-  arm_efi = kern/arm/efi/misc.c;
   arm_efi = kern/efi/fdt.c;
 
   arm64_efi = kern/arm64/efi/init.c;
@@ -1693,7 +1692,9 @@ module = {
   powerpc_ieee1275 = loader/powerpc/ieee1275/linux.c;
   sparc64_ieee1275 = loader/sparc64/ieee1275/linux.c;
   ia64_efi = loader/ia64/efi/linux.c;
-  arm = loader/arm/linux.c;
+  arm_coreboot = loader/arm/linux.c;
+  arm_efi = loader/arm64/linux.c;
+  arm_uboot = loader/arm/linux.c;
   arm64 = loader/arm64/linux.c;
   common = loader/linux.c;
   common = lib/cmdline.c;
@@ -1702,7 +1703,7 @@ module = {
 
 module = {
   name = fdt;
-  arm64 = loader/efi/fdt.c;
+  efi = loader/efi/fdt.c;
   common = lib/fdt.c;
   enable = fdt;
 };

grub-core/kern/efi/mm.c

@@ -634,7 +634,7 @@ grub_efi_mm_init (void)
 		       2 * BYTES_TO_PAGES (MEMORY_MAP_SIZE));
 }
 
-#if defined (__aarch64__)
+#if defined (__aarch64__) || defined (__arm__)
 grub_err_t
 grub_efi_get_ram_base(grub_addr_t *base_addr)
 {