staging: fbtft: fb_st7735r.c: remove extra parentheses around function arguments

Removes extra parentheses around function arguments. Issue
detected and resolved using the following coccinelle script:

@@
expression e;
identifier f;
@@

f(...,
-(
e
-)
,...)
Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fb_st7735r.c

@@ -130,7 +130,7 @@ static int set_var(struct fbtft_par *par)
 		write_reg(par, 0x36, MY | MV | (par->bgr << 3));
 		break;
 	case 180:
-		write_reg(par, 0x36, (par->bgr << 3));
+		write_reg(par, 0x36, par->bgr << 3);
 		break;
 	case 90:
 		write_reg(par, 0x36, MX | MV | (par->bgr << 3));