OMAP2/3 PRCM: convert IDLEST register bit macros to use the _SHIFT/_MASK style

Originally when the PRCM register macros were defined, bit shift macros
used a "_SHIFT" suffix, and mask macros used none.  This became a source
of bugs and confusion, as the mask macros were mistakenly used for shift
values.  Gradually, the mask macros have been updated, piece by piece,
to add a "_MASK" suffix on the end to clarify.  This patch applies this
change to the CM_IDLEST_* register bits.

The patch also adds a few bits that were missing, mostly from the 3430ES1
to ES2 revisions.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>