arm/dt: 8910: change from memory mapped to cp15 timer
arm/dt: 8910: change from memory mapped to cp15 timer

8910 sim now supports cp15 timer. Memomry mapped timer is no
longer required.

Change-Id: I0e6dac07c059ade2bcc574fcd1216a1afeeca3a4
Signed-off-by: Syed Rameez Mustafa <d316c38b3127db4a8d19f369f757269f344aa63c@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas