8144885: agent/src/os/linux/libproc.h needs to support Linux/SPARC builds

Summary: Added include of asm/ptrace.h to libproc.h
Reviewed-by: dcubed, mikael

agent/src/os/linux/libproc.h

@@ -69,6 +69,7 @@ combination of ptrace and /proc calls.
 
 
 #if defined(sparc) || defined(sparcv9) || defined(ppc64)
+#include <asm/ptrace.h>
 #define user_regs_struct  pt_regs
 #endif