drm/tidss: dispc7: Remove unneeded semicolon from c8_to_c12()

Remove unneeded semicolon from switch-case statement in c8_to_c12().

Signed-off-by: Jyri Sarha <jsarha@ti.com>

drivers/gpu/drm/tidss/tidss_dispc7.c

@@ -678,7 +678,7 @@ static u16 c8_to_c12(u8 c8, enum c8_to_c12_mode mode)
 	default:
 	case C8_TO_C12_MIN:
 		break;
-	};
+	}
 
 	return c12;
 }