gdb/testsuite: Rename skip_hipcc_tests to allow_hipcc_tests

Rename skip_hipcc_tests to allow_hipcc_tests so it can be used as a
"require" predicate in tests.

Use require in gdb.rocm/simple.exp.

Approved-By: Simon Marchi <simon.marchi@efficios.com>

gdb/testsuite/gdb.rocm/simple.exp

@@ -20,10 +20,7 @@ load_lib rocm.exp
 
 standard_testfile .cpp
 
-if [skip_hipcc_tests] {
-    verbose "skipping hip test: ${testfile}"
-    return
-}
+require allow_hipcc_tests
 
 if {[build_executable "failed to prepare" $testfile $srcfile {debug hip}]} {
     return

gdb/testsuite/lib/rocm.exp

@@ -15,14 +15,14 @@
 #
 # Support library for testing ROCm (AMD GPU) GDB features.
 
-proc skip_hipcc_tests { } {
+proc allow_hipcc_tests { } {
     # Only the native target supports ROCm debugging.  E.g., when
     # testing against GDBserver, there's no point in running the ROCm
     # tests.
     if {[target_info gdb_protocol] != ""} {
-        return 1
+	return 0
     }
-    return 0
+    return 1
 }
 
 # The lock file used to ensure that only one GDB has access to the GPU