Revert "UBUNTU: SAUCE: powerpc/asm: Allow including ppc_asm.h in asm files"

This reverts commit 323c02b0.

CVE-2017-5754

BugLink: http://bugs.launchpad.net/bugs/1756121Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

arch/powerpc/include/asm/ppc_asm.h

@@ -10,7 +10,9 @@
 #include <asm/ppc-opcode.h>
 #include <asm/firmware.h>
 
-#ifdef __ASSEMBLY__
+#ifndef __ASSEMBLY__
+#error __FILE__ should only be used in assembler files
+#else
 
 #define SZL			(BITS_PER_LONG/8)
 
@@ -806,7 +808,5 @@ END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,945)
 	.long 0xa6037b7d; /* mtsrr1 r11				*/ \
 	.long 0x2400004c  /* rfid				*/
 #endif /* !CONFIG_PPC_BOOK3E */
-
 #endif /*  __ASSEMBLY__ */
-
 #endif /* _ASM_POWERPC_PPC_ASM_H */