ARM: shmobile: Add Koelsch clock workarounds for SDHI

Add SDHI0, SDHI1 and SDHI2 to the clock workaround list for
Koelsch multiplatform. Without these additional lines wakeup
from Suspend-to-RAM never happens.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>