staging: fbtft: fb_ssd1289: Fix checkpatch warning

Fix checkpatch.pl warning:
Block comments use * on subsequent lines
Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fb_ssd1289.c

@@ -131,10 +131,10 @@ static int set_var(struct fbtft_par *par)
 }
 
 /*
-  Gamma string format:
-    VRP0 VRP1 PRP0 PRP1 PKP0 PKP1 PKP2 PKP3 PKP4 PKP5
-    VRN0 VRN1 PRN0 PRN1 PKN0 PKN1 PKN2 PKN3 PKN4 PKN5
-*/
+ * Gamma string format:
+ * VRP0 VRP1 PRP0 PRP1 PKP0 PKP1 PKP2 PKP3 PKP4 PKP5
+ * VRN0 VRN1 PRN0 PRN1 PKN0 PKN1 PKN2 PKN3 PKN4 PKN5
+ */
 #define CURVE(num, idx)  curves[num * par->gamma.num_values + idx]
 static int set_gamma(struct fbtft_par *par, unsigned long *curves)
 {