arm: common: Use noinline to prevent inlining of function

Declare function as noinline so that function which changes
during run time does not get inlined and instead gets called.
Without this, the function contents get inlined while
optimization is turned on.

Change-Id: I8533b0c5a83ed48346a2846e7cd531b8907f82d8
Signed-off-by: Suren Eda Naarayana Kulothungan <sedanaar@codeaurora.org>
(cherry picked from commit 42b0f68886094aa319aa9ca8da72c5ac394dd1e9)