[media] vivid-tpg: use true/false for boolean vars

Instead of using 0 or 1 for boolean, use the true/false
defines.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/platform/vivid/vivid-tpg.c

@@ -183,7 +183,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
 	case V4L2_PIX_FMT_XBGR32:
 	case V4L2_PIX_FMT_ARGB32:
 	case V4L2_PIX_FMT_ABGR32:
-		tpg->is_yuv = 0;
+		tpg->is_yuv = false;
 		break;
 	case V4L2_PIX_FMT_NV16M:
 	case V4L2_PIX_FMT_NV61M:
@@ -193,7 +193,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
 	case V4L2_PIX_FMT_UYVY:
 	case V4L2_PIX_FMT_YVYU:
 	case V4L2_PIX_FMT_VYUY:
-		tpg->is_yuv = 1;
+		tpg->is_yuv = true;
 		break;
 	default:
 		return false;