staging: fbtft: fb_ssd1351.c: Replace bit shifting with BIT macro

Challenge suggested by coccinelle.
Prefer using BIT and replace bit shifting with the BIT(x) macro.
Signed-off-by: Payal Kshirsagar <payal.s.kshirsagar.98@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fb_ssd1351.c

@@ -81,10 +81,10 @@ static int set_var(struct fbtft_par *par)
 
 	switch (par->info->var.rotate) {
 	case 0:
-		write_reg(par, 0xA0, remap | 0x00 | 1 << 4);
+		write_reg(par, 0xA0, remap | 0x00 | BIT(4));
 		break;
 	case 270:
-		write_reg(par, 0xA0, remap | 0x03 | 1 << 4);
+		write_reg(par, 0xA0, remap | 0x03 | BIT(4));
 		break;
 	case 180:
 		write_reg(par, 0xA0, remap | 0x02);