ARM: shmobile: armadillo800eva: enable NEON on defconfig

The application / library will be stopped by illegal instruction
on current Armaddilo800eva board,
since defconfig doesn't have CONFIG_NEON.
This patch enabled it.
Special thanks to Ishiyama-san

Reported-by: Kiyoshi Ishiyama <kiyoshi.ishiyama.wg@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Kiyoshi Ishiyama <kiyoshi.ishiyama.wg@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/configs/armadillo800eva_defconfig

@@ -36,6 +36,7 @@ CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_ARM_APPENDED_DTB=y
 CONFIG_KEXEC=y
 CONFIG_VFP=y
+CONFIG_NEON=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_PM_RUNTIME=y
 CONFIG_NET=y