drm: omapdrm: sdi: Remove platform driver

The SDI platform driver was used for non-DT platforms only. On DT
platforms the SDI port is handled manually. As OMAP display devices are
now instantiated from DT only, remove the SDI platform driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/dss/dss.h

@@ -280,9 +280,6 @@ bool dss_div_calc(unsigned long pck, unsigned long fck_min,
 		dss_div_calc_func func, void *data);
 
 /* SDI */
-int sdi_init_platform_driver(void) __init;
-void sdi_uninit_platform_driver(void);
-
 #ifdef CONFIG_OMAP2_DSS_SDI
 int sdi_init_port(struct platform_device *pdev, struct device_node *port);
 void sdi_uninit_port(struct device_node *port);