Bump the number of SDMA engines for gfx940

GFX940 can support up to 16 SDMA engines so bump it.

Change-Id: I41a95e66383036735712e317a57b239d84fcb78d

runtime/hsa-runtime/inc/hsa_ext_amd.h

@@ -418,7 +418,15 @@ typedef enum hsa_amd_sdma_engine_id {
   HSA_AMD_SDMA_ENGINE_4 = 0x10,
   HSA_AMD_SDMA_ENGINE_5 = 0x20,
   HSA_AMD_SDMA_ENGINE_6 = 0x40,
-  HSA_AMD_SDMA_ENGINE_7 = 0x80
+  HSA_AMD_SDMA_ENGINE_7 = 0x80,
+  HSA_AMD_SDMA_ENGINE_8 = 0x100,
+  HSA_AMD_SDMA_ENGINE_9 = 0x200,
+  HSA_AMD_SDMA_ENGINE_10 = 0x400,
+  HSA_AMD_SDMA_ENGINE_11 = 0x800,
+  HSA_AMD_SDMA_ENGINE_12 = 0x1000,
+  HSA_AMD_SDMA_ENGINE_13 = 0x2000,
+  HSA_AMD_SDMA_ENGINE_14 = 0x4000,
+  HSA_AMD_SDMA_ENGINE_15 = 0x8000
 } hsa_amd_sdma_engine_id_t;
 
 typedef struct hsa_amd_hdp_flush_s {