drivers/intel/fsp2_0: Unbind UDK2015 Kconfig from FSP2.0 driver

Now SOC code can select the require UDK support package for any
platform going forward with FSP2.0 model.

Change-Id: Ie6d1b9133892c59210a659ef0ad4b59ebf9f1e45
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/23426
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/cannonlake/Kconfig

@@ -75,6 +75,7 @@ config CPU_SPECIFIC_OPTIONS
 	select TSC_CONSTANT_RATE
 	select TSC_MONOTONIC_TIMER
 	select UDELAY_TSC
+	select UDK_2017_BINDING
 
 config UART_DEBUG
 	bool "Enable UART debug port."