config: Add OCC driver to the ast2500 config

Change-Id: I2dfcbcdb27fe4aa2cb148de9d9ce2c0b5c5429d1
Signed-off-by: Edward A. James <eajames@us.ibm.com>
diff --git a/meta-openbmc-bsp/meta-aspeed/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig b/meta-openbmc-bsp/meta-aspeed/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig
index 7ead9b6..60d5382 100644
--- a/meta-openbmc-bsp/meta-aspeed/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig
+++ b/meta-openbmc-bsp/meta-aspeed/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig
@@ -157,6 +157,7 @@
 CONFIG_FSI=y
 CONFIG_FSI_MASTER_GPIO=y
 CONFIG_FSI_SBEFIFO=y
+CONFIG_OCCFIFO=y
 CONFIG_FSI_SCOM=y
 CONFIG_FSI_I2C=y
 CONFIG_FIRMWARE_MEMMAP=y