usb: omap: ohci: Missing driver unregister in module exit

The un-registration of OHCI driver was not done in the ohci_hcd_mod_exit
function. This was affecting rmmod command not to work for OMAP3
platforms.  The platform driver un-registration for OMAP3 platforms is
perfomed while removing the OHCI module from kernel.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Signed-of-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 8ef3c19..3b57850 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1277,6 +1277,9 @@
 #ifdef PLATFORM_DRIVER
 	platform_driver_unregister(&PLATFORM_DRIVER);
 #endif
+#ifdef OMAP3_PLATFORM_DRIVER
+	platform_driver_unregister(&OMAP3_PLATFORM_DRIVER);
+#endif
 #ifdef PS3_SYSTEM_BUS_DRIVER
 	ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
 #endif