Use __ASSEMBLY__ as the assembly macros

Some places use __ASSEMBLER__ instead which does not work since the
Makefile does not define it. Fix them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/include/asm/arch-mx27/regs-rtc.h b/arch/arm/include/asm/arch-mx27/regs-rtc.h
index d373ab15..8434f4c 100644
--- a/arch/arm/include/asm/arch-mx27/regs-rtc.h
+++ b/arch/arm/include/asm/arch-mx27/regs-rtc.h
@@ -21,6 +21,6 @@
 	u32 dayr;
 	u32 dayalarm;
 };
-#endif /* __ASSEMBLY__*/
+#endif /* __ASSEMBLY__ */
 
 #endif	/* __MX28_REGS_RTC_H__ */