make it use gdb instead of lldb when mac-android cross compile

mk/tests.mk

@@ -569,6 +569,11 @@ ifeq ($(CFG_OSTYPE),apple-darwin)
 CTEST_DISABLE_debuginfo-gdb = "gdb on darwin needs root"
 endif
 
+ifeq ($(findstring android, $(CFG_TARGET)), android)
+CTEST_DISABLE_debuginfo-gdb =
+CTEST_DISABLE_debuginfo-lldb = "lldb tests are disabled on android"
+endif
+
 # CTEST_DISABLE_NONSELFHOST_$(TEST_GROUP), if set, will cause that
 # test group to be disabled *unless* the target is able to build a
 # compiler (i.e. when the target triple is in the set of of host