Staging: sm750fb: use unsigned int instead unsigned

This patch fixes a WARNING: Prefer 'unsigned int' to bare use of
'unsigned', found by checkpatch.pl. By fixing this the types of the parameters of the function become more explicit.
Signed-off-by: Muraru Mihaela <mihaela.muraru21@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/sm750.c

@@ -575,11 +575,11 @@ static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
 	return hw_sm750_crtc_checkMode(crtc, var);
 }
 
-static int lynxfb_ops_setcolreg(unsigned regno,
-				unsigned red,
-				unsigned green,
-				unsigned blue,
-				unsigned transp,
+static int lynxfb_ops_setcolreg(unsigned int regno,
+				unsigned int red,
+				unsigned int green,
+				unsigned int blue,
+				unsigned int transp,
 				struct fb_info *info)
 {
 	struct lynxfb_par *par;