PCI: keystone: Enable compile-testing on !ARM

Currently the Keystone driver can only be compile-tested on ARM, but
this restriction seems unnecessary. Get rid of it to increase test
coverage.

Build-tested with allyesconfig on x86, ppc, mips and riscv.

Link: https://lore.kernel.org/r/20200906195128.279342-1-alex.dewar90@gmail.comSigned-off-by: Alex Dewar <alex.dewar90@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Rob Herring <robh@kernel.org>

drivers/pci/controller/dwc/Kconfig

@@ -107,7 +107,7 @@ config PCI_KEYSTONE
 
 config PCI_KEYSTONE_HOST
 	bool "PCI Keystone Host Mode"
-	depends on ARCH_KEYSTONE || ARCH_K3 || ((ARM || ARM64) && COMPILE_TEST)
+	depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
 	depends on PCI_MSI_IRQ_DOMAIN
 	select PCIE_DW_HOST
 	select PCI_KEYSTONE
@@ -119,7 +119,7 @@ config PCI_KEYSTONE_HOST
 
 config PCI_KEYSTONE_EP
 	bool "PCI Keystone Endpoint Mode"
-	depends on ARCH_KEYSTONE || ARCH_K3 || ((ARM || ARM64) && COMPILE_TEST)
+	depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
 	depends on PCI_ENDPOINT
 	select PCIE_DW_EP
 	select PCI_KEYSTONE