gdb.rocm/watchpoint-at-end-of-shader: remove use of hip_devices_support_precise_memory

Make the gdb.rocm/watchpoint-at-end-of-shader.exp test not rely on
hip_devices_support_precise_memory as this helper function will be
removed.

Change-Id: I25d32a68158e37f8821a03cf03618a41456af42d

Author: lancesix

gdb/testsuite/gdb.rocm/watchpoint-at-end-of-shader.exp

@@ -77,9 +77,28 @@ proc do_test {precise_memory has_xfail} {
     }
 }
 
-set supports_precise_memory [hip_devices_support_precise_memory]
 set has_xfail [target_has_xfail]
 
+# First check if we support precise-memory.
+set supports_precise_memory 0
+clean_restart $::binfile
+with_rocm_gpu_lock {
+    if {![runto_main]} {
+	return
+    }
+
+    gdb_test_multiple "set amdgpu precise-memory on" "" {
+	-re -wrap "warning: AMDGPU precise memory access reporting could not be enabled\\." {
+	    set supports_precise_memory 0
+	    pass $gdb_test_name
+	}
+	-re -wrap "^" {
+	    set supports_precise_memory 1
+	    pass $gdb_test_name
+	}
+    }
+}
+
 foreach_with_prefix precise_memory {on off} {
     if { $precise_memory && !$supports_precise_memory } {
 	unsupported "target does not support precise memory"