Declare sys_irq_enable() and sys_irq_enable() directly in
lib/system/@PROJECT_SYSTEM@/sys.h.
This allows to declare the machine out of tree of the libmetal but
also to support the in-tree template.
[minor style fix by tanmay]
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Signed-off-by: Tanmay Shah <tanmay.shah@amd.com>
ece95f0e71