ARM: keystone: defconfig: add options to enable PCI controller

This patch enables PCI controller driver for Keystone SoCs by
default.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
diff --git a/arch/arm/configs/keystone_defconfig b/arch/arm/configs/keystone_defconfig
index 4c799b5..20a3ff9 100644
--- a/arch/arm/configs/keystone_defconfig
+++ b/arch/arm/configs/keystone_defconfig
@@ -20,6 +20,9 @@
 CONFIG_MODVERSIONS=y
 CONFIG_ARCH_KEYSTONE=y
 CONFIG_ARM_LPAE=y
+CONFIG_PCI=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_KEYSTONE=y
 CONFIG_SMP=y
 CONFIG_PREEMPT=y
 CONFIG_AEABI=y