tests: Disable sys/compat32 and sys/compat32/aarch64 tests

The former has build system issues, with missing Kyuafiles, presumably
due to not using TESTS_SUBDIRS and bsd.test.mk (and possibly some issues
on top of that around TESTSDIR and related variables). The latter has
issues with GCC and cut-down LLVM builds.

Requested by:	kevans
Fixes:		ccb59683b9 ("arm64: add tests for swp/swpb emulation")

tests/sys/compat32/Makefile

@@ -1,6 +1,8 @@
-
+# XXX: Currently broken in CI
+.if 0
 .if exists(${.CURDIR}/${MACHINE_ARCH})
 SUBDIR+=	${MACHINE_ARCH}
 .endif
 
 .include <bsd.subdir.mk>
+.endif

tests/sys/compat32/aarch64/Makefile

@@ -1,3 +1,5 @@
+# XXX: Doesn't work with GCC and requires an LLVM with the ARM backend
+.if 0
 PACKAGE=	tests
 FILESGROUPS+=	asmprogs
 
@@ -22,3 +24,4 @@ ${aprog}: ${aprog}.S
 .endfor
 
 .include <bsd.test.mk>
+.endif