grub2.inc: set GRUBPLATFORM_arm to efi

* grub-efi support on arm is enabled as below
  commit:
  commit 65f9fb788371a9a08e3b0e6febecb9cc2aaeefe7
  Author: Kristian Amlie <kristian.amlie@northern.tech>
  Date:   Tue Jul 10 16:07:12 2018 +0200

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

* But it fails on arm as below:
  | grub-mkimage: error: cannot open `./grub-core//serial.mod': No such file or directory.

  Set GRUBPLATFORM_arm = "efi" to fix the above error

(From OE-Core rev: 6ad431974d96aec29d12079be8b94c479b91c446)

Signed-off-by: Mingli Yu <Mingli.Yu@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc
index 230c585691..325eca25bb 100644
--- a/meta/recipes-bsp/grub/grub2.inc
+++ b/meta/recipes-bsp/grub/grub2.inc
@@ -33,7 +33,7 @@ COMPATIBLE_HOST_armv7ve = 'null'
 # configure.ac has code to set this automagically from the target tuple
 # but the OE freeform one (core2-foo-bar-linux) don't work with that.
 
-GRUBPLATFORM_arm = "uboot"
+GRUBPLATFORM_arm = "efi"
 GRUBPLATFORM_aarch64 = "efi"
 GRUBPLATFORM ??= "pc"