ARM: shmobile: Enable HIGHMEM in shmobile_defconfig

Many mach-shmobile hardware platforms include support for more
than 1GiB of RAM. Enable HIGHMEM by default to allow use of
larger amounts of memory.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/arch/arm/configs/shmobile_defconfig b/arch/arm/configs/shmobile_defconfig
index c10e626..b73a038 100644
--- a/arch/arm/configs/shmobile_defconfig
+++ b/arch/arm/configs/shmobile_defconfig
@@ -25,6 +25,7 @@
 CONFIG_HAVE_ARM_ARCH_TIMER=y
 CONFIG_NR_CPUS=8
 CONFIG_AEABI=y
+CONFIG_HIGHMEM=y
 CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_ARM_APPENDED_DTB=y