ARM: shmobile: Include at24.c in shmobile_defconfig

The Koelsch board includes an at24-compatible EEPROM hooked up via I2C.
To increase hardware support enable the driver in the shmobile_defconfig
multiplatform configuration.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
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 d96133a..146ee70 100644
--- a/arch/arm/configs/shmobile_defconfig
+++ b/arch/arm/configs/shmobile_defconfig
@@ -43,6 +43,7 @@
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_MTD=y
 CONFIG_MTD_M25P80=y
+CONFIG_EEPROM_AT24=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_ATA=y
 CONFIG_SATA_RCAR=y