Signal Fix: Changed global signal count to per stream signal count

1. The number of kernels that can use signals are increased to 128
2. The kernel count is now specific to the stream

Change-Id: Ie6d1aa3f437aad8f08c3333fe48bd3f46e551e60

hipamd/include/hcc_detail/hip_hcc.h

@@ -393,7 +393,7 @@ typedef LockedAccessor<ihipStreamCritical_t> LockedAccessor_StreamCrit_t;
 class ihipStream_t {
 public:
 typedef uint64_t SeqNum_t ;
-
+    uint32_t kernelCnt;
     ihipStream_t(unsigned device_index, hc::accelerator_view av, unsigned int flags);
     ~ihipStream_t();