[RESEND PATCH] ARM: multi_v7_defconfig: Enable PBIAS regulator

Kishon Vijay Abraham I [off-list ref] writes:

PBIAS regulator is required for MMC module in OMAP2, OMAP3, OMAP4,
OMAP5 and DRA7 SoCs. Enable it here.

Signed-off-by: Kishon Vijay Abraham I <redacted>

Thanks, added to our next/late branch.

Kevin