mach-ux500: backport clock rate callbacks and MTU frequency fix

This is a backport of the changes adding per-clock callbacks
submitted to the mainline kernel tree, and reads out the MTU-
specific clock routing register.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/1700
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Change-Id: I41f65d78b995ecfa210b9bf6283351b027ae8bbd
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/2631
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
3 files changed