tegra: Migrate CI_UDC_HAS_HOSTPC to Kconfig

This option is only enabled for CI_UDC and !TEGRA20, so implement it as
such in Kconfig directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>

include/configs/beaver.h

@@ -24,7 +24,6 @@
 #define CONFIG_TEGRA_SLINK_CTRLS       6
 #define CONFIG_SPI_FLASH_SIZE          (4 << 20)
 
-#include "tegra-common-usb-gadget.h"
 #include "tegra-common-post.h"
 
 #endif /* __CONFIG_H */