OMAP4: prcm: Fix errors in few defines name

A couple of macros were wrongly changed during the _MOD to _INST
rename done in the following commit:

  OMAP4: PRCM: rename _MOD macros to _INST
  cdb54c44

Fix them to their original name.

Some CM and PRM instances were not well aligned. Align them.

Remove one blank line in cm2_44xx.h to align the output with
the other (cm1_44xx.h, prm44xx.h) files.

Update header copyright date.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>