Convert CONFIG_83XX_PCICLK to Kconfig

This converts the following to Kconfig:
   CONFIG_83XX_PCICLK

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/kmcoge5ne_defconfig b/configs/kmcoge5ne_defconfig
index 461f2e3..53f7abc 100644
--- a/configs/kmcoge5ne_defconfig
+++ b/configs/kmcoge5ne_defconfig
@@ -156,6 +156,7 @@
 CONFIG_LCRR_DBYP_PLL_BYPASSED=y
 CONFIG_LCRR_EADC_2=y
 CONFIG_LCRR_CLKDIV_4=y
+CONFIG_83XX_PCICLK=0x3ef1480
 CONFIG_SYS_LOAD_ADDR=0x100000
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y