[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_kmp.c b/lib/ts_kmp.c
index 73266b9..e45f0f0 100644
--- a/lib/ts_kmp.c
+++ b/lib/ts_kmp.c
@@ -87,7 +87,7 @@
 }
 
 static struct ts_config *kmp_init(const void *pattern, unsigned int len,
-				  int gfp_mask)
+				  unsigned int __nocast gfp_mask)
 {
 	struct ts_config *conf;
 	struct ts_kmp *kmp;