[MTD] [NOR] Use NULL instead of 0 for pointer to shut sparse up.

Use NULL instead of 0 for pointer:
drivers/mtd/chips/cfi_cmdset_0001.c:2258:43: warning: Using plain integer as NULL pointer

Other changes by inspection.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 46d782f..f838be2 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -1930,7 +1930,7 @@
 	printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X\n",
 	       __FUNCTION__, ofs, len);
 	cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
-		ofs, len, 0);
+		ofs, len, NULL);
 #endif
 
 	ret = cfi_varsize_frob(mtd, do_xxlock_oneblock,
@@ -1940,7 +1940,7 @@
 	printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
 	       __FUNCTION__, ret);
 	cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
-		ofs, len, 0);
+		ofs, len, NULL);
 #endif
 
 	return ret;
@@ -1954,7 +1954,7 @@
 	printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X\n",
 	       __FUNCTION__, ofs, len);
 	cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
-		ofs, len, 0);
+		ofs, len, NULL);
 #endif
 
 	ret = cfi_varsize_frob(mtd, do_xxlock_oneblock,
@@ -1964,7 +1964,7 @@
 	printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
 	       __FUNCTION__, ret);
 	cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
-		ofs, len, 0);
+		ofs, len, NULL);
 #endif
 
 	return ret;