SWDEV-475394 - Fix for the return type to be in-line with CUDA

Change-Id: I7c833571d47b4e86a86e4a0095b61947d16ecab6

hipamd/include/hip/amd_detail/amd_device_functions.h

@@ -63,19 +63,19 @@ __device__ static inline int __clzll(long long int input) {
     return __ockl_clz_u64((uint64_t)input);
 }
 
-__device__ static inline unsigned int __ffs(unsigned int input) {
+__device__ static inline int __ffs(unsigned int input) {
     return ( input == 0 ? -1 : __builtin_ctz(input) ) + 1;
 }
 
-__device__ static inline unsigned int __ffsll(unsigned long long int input) {
+__device__ static inline int __ffsll(unsigned long long int input) {
     return ( input == 0 ? -1 : __builtin_ctzll(input) ) + 1;
 }
 
-__device__ static inline unsigned int __ffs(int input) {
+__device__ static inline int __ffs(int input) {
     return ( input == 0 ? -1 : __builtin_ctz(input) ) + 1;
 }
 
-__device__ static inline unsigned int __ffsll(long long int input) {
+__device__ static inline int __ffsll(long long int input) {
     return ( input == 0 ? -1 : __builtin_ctzll(input) ) + 1;
 }