PCI: iproc: Fix BCMA dependency in Kconfig

The current iProc BCMA front-end driver can only work on ARM32 based
platforms; therefore its config option in Kconfig should be changed to
reflect that. This fixes arm64 allmodconfig build failure when compiling
the the iProc BCMA driver that contains struct pci_sys_data that is
arm32 specific

Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

drivers/pci/host/Kconfig

@@ -136,7 +136,7 @@ config PCIE_IPROC_PLATFORM
 
 config PCIE_IPROC_BCMA
 	bool "Broadcom iProc PCIe BCMA bus driver"
-	depends on ARCH_BCM_IPROC || (ARM && COMPILE_TEST)
+	depends on ARM && (ARCH_BCM_IPROC || COMPILE_TEST)
 	select PCIE_IPROC
 	select BCMA
 	select PCI_DOMAINS