perf(cpus): inline the cpu_get_rev_var call

Similar to the cpu_rev_var_xy functions, branching far away so early in
the reset sequence incurs significant slowdowns. Inline the function.

Change-Id: Ifc349015902cd803e11a1946208141bfe7606b89
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
2 files changed