Wei Huang authored Dec 06, 2016 and Andrew Jones committed Dec 19, 2016

To prepare for future support of ARMv8 system register, rename cp15.h file
to sysreg.h, with _ASMARM_CP15_H_ renamed to _ASMARM_SYSREG_H_ in header
file.

Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>