vfio-platform: Add COMPILE_TEST to VFIO_PLATFORM

x86 can build platform bus code too, so vfio-platform and all the platform
reset implementations compile successfully on x86.
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Message-Id: <2-v1-df057e0f92c3+91-vfio_arm_compile_test_jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

drivers/vfio/platform/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config VFIO_PLATFORM
 	tristate "VFIO support for platform devices"
-	depends on VFIO && EVENTFD && (ARM || ARM64)
+	depends on VFIO && EVENTFD && (ARM || ARM64 || COMPILE_TEST)
 	select VFIO_VIRQFD
 	help
 	  Support for platform devices with VFIO. This is required to make