ANDROID: arm64: vdso: guard against -Wl,-n

LLD does not yet support it.

Bug: 63740206
Link: ClangBuiltLinux/linux#340
Link: https://bugs.llvm.org/show_bug.cgi?id=40542
Change-Id: Id62a3631b2da130a44ae018ddf4a2e8d095c16d7
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>

arch/arm64/kernel/vdso/Makefile

@@ -73,7 +73,8 @@ $(obj-vdso-c): %.o: %.c FORCE
 
 # Actual build commands
 quiet_cmd_vdsold = VDSOL   $@
-      cmd_vdsold = $(CC) $(c_flags) -Wl,-n -Wl,-T $^ -o $@
+      cmd_vdsold = $(CC) $(c_flags) $(call cc-ldoption, -Wl$(comma)-n) \
+						-Wl$(comma)-T $^ -o $@
 quiet_cmd_vdsocc = VDSOC   $@
       cmd_vdsocc = ${CC} $(c_flags) -c -o $@ $<
 quiet_cmd_vdsoas = VDSOA   $@