EXSWCPHIPT-77 - Extending tests for hipHostRegister (#2609)

[ROCm/hip-tests commit: eafb3a23ee]

projects/hip-tests/catch/include/hip_test_helper.hh

@@ -38,7 +38,7 @@ static inline int getGeviceCount() {
 }
 
 // Get Free Memory from the system
-static size_t getMemoryAmount() {
+static inline size_t getMemoryAmount() {
 #ifdef __linux__
   struct sysinfo info{};
   sysinfo(&info);