[PATCH -next] drm/bridge: cdns: Remove set but not used variable 'bpp'

[YueHaibing]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/bridge/cdns-dsi.c: In function 'cdns_dsi_bridge_enable':
drivers/gpu/drm/bridge/cdns-dsi.c:986:6: warning:
 variable 'bpp' set but not used [-Wunused-but-set-variable]

It never used since introduction.

Signed-off-by: YueHaibing <yuehaibing at huawei.com>
---
 drivers/gpu/drm/bridge/cdns-dsi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c
index 6166dca6be81..07ee1685fdfe 100644
--- a/drivers/gpu/drm/bridge/cdns-dsi.c
+++ b/drivers/gpu/drm/bridge/cdns-dsi.c
@@ -785,13 +785,12 @@ static void cdns_dsi_bridge_enable(struct drm_bridge *bridge)
 	unsigned long tx_byte_period;
 	struct cdns_dsi_cfg dsi_cfg;
 	u32 tmp, reg_wakeup, div;
-	int bpp, nlanes;
+	int nlanes;
 
 	if (WARN_ON(pm_runtime_get_sync(dsi->base.dev) < 0))
 		return;
 
 	mode = &bridge->encoder->crtc->state->adjusted_mode;
-	bpp = mipi_dsi_pixel_format_to_bpp(output->dev->format);
 	nlanes = output->dev->lanes;
 
 	WARN_ON_ONCE(cdns_dsi_check_conf(dsi, mode, &dsi_cfg, false));