omap4: control: Fix the control module register accesses

This patch has multiple fixes together. To ensure that git bisect work across
commits, all changes are clubbed together

1. Move the common control base address to control core
2. Remove the manually coeded defines and use the ones from headers.
3. Fix the the status register define in id.c for OMAP4
4. Fix all the register define in hsmmc.c
5. Use the control pad accessor API for omap4 hsmmc register accesses

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>