SPMD: SPMC init, SMC handler cosmetic changes

Change-Id: I8881d489994aea667e3dd59932ab4123f511d6ba
Signed-off-by: Artsem Artsemenka <artsem.artsemenka@arm.com>
Signed-off-by: Max Shvetsov <maksims.svecovs@arm.com>
diff --git a/include/services/spmd_svc.h b/include/services/spmd_svc.h
index 6e4caf2..a766dcf 100644
--- a/include/services/spmd_svc.h
+++ b/include/services/spmd_svc.h
@@ -11,7 +11,7 @@
 #include <services/spci_svc.h>
 #include <stdint.h>
 
-int32_t spmd_setup(void);
+int spmd_setup(void);
 uint64_t spmd_smc_handler(uint32_t smc_fid,
 			  uint64_t x1,
 			  uint64_t x2,