fix(gicv3): move invocation of gicv3_get_multichip_base function

gicv3_get_multichip_base in case of GICV3_IMPL_GIC600_MULTICHIP flag
being set, only works if the id belongs to SPI range.
Moving invocation of the function after confirming that the
intr_num belongs to SPI range.

Signed-off-by: sahil <sahil@arm.com>
Change-Id: I429eb473a7aeccb30309b1ffa5994663393ba0a2
1 file changed