arm: Allow overriding the alignment set in the function macro
The function macro always sets .align 2 before declaring the
function label (since
5c5e1ea3) and always sets the section to
.text (since
278caa6a).
The .align 5 before certain functions, added in
fc252eba, were added
before .text and .align were added to the function macro and thus
became useless/unused when the function macro got them.
This restores the original intention, to align the loop entry
points.
Signed-off-by: Martin Storsjö <martin@martin.st>