atstk1000: fix build breakage with BOARD_ATSTK100X_SW2_CUSTOM=y
atstk1000: fix build breakage with BOARD_ATSTK100X_SW2_CUSTOM=y

The #ifdef surrounding the code adding the mmc controller had a typo,
causing it to be compiled even when mmc was supposed to be disabled.

Signed-off-by: Haavard Skinnemoen <af8c0cf3411930951fa86926b241df32af99fdb9@atmel.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas