Allow spin locks to be defined from assembly
Jeenu Viswambharan authored
At present, spin locks can only defined from C files. Add some macros
such that they can be defined from assembly files too.

Change-Id: I64f0c214062f5c15b3c8b412c7f25c908e87d970
Signed-off-by: default avatarJeenu Viswambharan <jeenu.viswambharan@arm.com>
b38bc68b