gtimer: Corrects the definition of the CNTControlBase register
This patch corrects the definition of the CNTControlBase register frame in accordance with the latest architecture manual, a-profile_architecture_reference_manual. It also addes static asserts to make sure the offsets for this frame are correct.
Signed-off-by: Tarek El-Sherbiny tarek.el-sherbiny@arm.com Change-Id: I1a1f137c69c6742e836875ef2855f20d8c816b67