[TEXTSEARCH]: fix sparse gfp nocast warnings

Fix nocast sparse warnings:
include/linux/textsearch.h:165:57: warning: implicit cast to nocast type

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/lib/ts_bm.c b/lib/ts_bm.c
index 2cc79112..1b61fce 100644
--- a/lib/ts_bm.c
+++ b/lib/ts_bm.c
@@ -127,7 +127,7 @@
 }
 
 static struct ts_config *bm_init(const void *pattern, unsigned int len,
-				 int gfp_mask)
+				 unsigned int __nocast gfp_mask)
 {
 	struct ts_config *conf;
 	struct ts_bm *bm;