staging: ks7010: fix coding style issue of using __func__ instead of __FUNCTION__

This patch fixes coding style issue of using __func__ instead of gcc
specific __FUNCTION__, warning as issued by checkpatch
Signed-off-by: Chetan Sethi <cpsethi369@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_wlan.h

@@ -38,7 +38,7 @@
 #define DPRINTK(n, fmt, args...) \
 	do { \
 		if (KS_WLAN_DEBUG > (n)) \
-			pr_notice("%s: "fmt, __FUNCTION__, ## args); \
+			pr_notice("%s: "fmt, __func__, ## args); \
 	} while (0)
 #else
 #define DPRINTK(n, fmt, args...)