m68knommu: fix use of un-defined _TIF_WORK_MASK

The _TIF_WORK_MASK definition was removed in the clean up of MMU and
non-MMU arch/m68k/include/asm/thread_info*.h files (this was commit
cddafa35, "merge MMU and non-MMU
thread_info.h").

It didn't get cleaned out of the entry.S code for the 68328 and 68360
based platforms. And it was replaced by a hard coded constant mask for
coldfire platforms. There is currently no need to mask any of these bits,
so fix all uses (and former uses) to check for any non-zero value.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

arch/m68knommu/platform/68328/entry.S

@@ -108,7 +108,6 @@ Luser_return:
 	movel	%d1,%a2
 1:
 	move	%a2@(TI_FLAGS),%d1	/* thread_info->flags */
-	andl	#_TIF_WORK_MASK,%d1
 	jne	Lwork_to_do
 	RESTORE_ALL
 

arch/m68knommu/platform/68360/entry.S

@@ -104,7 +104,6 @@ Luser_return:
 	movel	%d1,%a2
 1:
 	move	%a2@(TI_FLAGS),%d1	/* thread_info->flags */
-	andl	#_TIF_WORK_MASK,%d1
 	jne	Lwork_to_do
 	RESTORE_ALL
 

arch/m68knommu/platform/coldfire/entry.S

@@ -138,7 +138,6 @@ Luser_return:
 	andl	#-THREAD_SIZE,%d1	/* at base of kernel stack */
 	movel	%d1,%a0
 	movel	%a0@(TI_FLAGS),%d1	/* get thread_info->flags */
-	andl	#0xefff,%d1
 	jne	Lwork_to_do		/* still work to do */
 
 Lreturn: