rocm_smi_lib: add stdbool.h needed for C90

'bool' keyword is supported only from C99 onwards. Include stdbool.h
for older compilers

Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Change-Id: I09fd5cf6eac20e7185e85a1123bc4826958b2b7c

include/rocm_smi/rocm_smi.h

@@ -51,6 +51,7 @@ extern "C" {
 #endif  // __cplusplus
 
 #include <stddef.h>
+#include <stdbool.h>
 
 #include "rocm_smi/kfd_ioctl.h"