msm8974: oc to 2534.4Mhz & uc to 96Mhz

Change-Id: Ibf1b15ab0c532d5c3151d19b4e15a1fd12e3d30e
Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
Add overclocking and Underclocking to Defconfig

Change-Id: Ib65f551eaaff3c1fd09decadc6be8159c7dbea21