ac: add ac_atomic_inc_wrap / ac_atomic_dec_wrap support

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/amd/common/ac_llvm_build.c

@@ -2580,6 +2580,8 @@ static const char *get_atomic_name(enum ac_atomic_op op)
 	case ac_atomic_and: return "and";
 	case ac_atomic_or: return "or";
 	case ac_atomic_xor: return "xor";
+	case ac_atomic_inc_wrap: return "inc";
+	case ac_atomic_dec_wrap: return "dec";
 	}
 	unreachable("bad atomic op");
 }

src/amd/common/ac_llvm_build.h

@@ -516,6 +516,8 @@ enum ac_atomic_op {
 	ac_atomic_and,
 	ac_atomic_or,
 	ac_atomic_xor,
+	ac_atomic_inc_wrap,
+	ac_atomic_dec_wrap,
 };
 
 enum ac_image_dim {