ARM: dts: msm: Update clocklist for MSMCOBALT

Update the clock list according to the latest clock
frequency plan. Also rename some clocks so as to follow
the convention used for previous devices.

Change-Id: Ie80bf3450586e643993f2c48a0a52be26fc7a079
Signed-off-by: Pushkar Joshi <pushkarj@codeaurora.org>
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>