omap4: powerdomain: Use intended PWRSTS_* flags instead of values

IVAHD and ABE power domain logic state is populated using directly
value instead of the capability flags.

Fix the same.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[paul@pwsan.com: updated to apply at a different point on the tree]
Signed-off-by: Paul Walmsley <paul@pwsan.com>