Convert CONFIG_SYS_FSL_NUM_CC_PLLS to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_FSL_NUM_CC_PLLS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/kmcent2_defconfig b/configs/kmcent2_defconfig
index dcc0b29..82ec1a9 100644
--- a/configs/kmcent2_defconfig
+++ b/configs/kmcent2_defconfig
@@ -15,6 +15,7 @@
 CONFIG_SYS_CACHE_STASHING=y
 # CONFIG_DEEP_SLEEP is not set
 CONFIG_PCIE1=y
+CONFIG_SYS_FSL_NUM_CC_PLLS=2
 CONFIG_KM_DEF_NETDEV="eth2"
 CONFIG_KM_IVM_BUS=2
 CONFIG_MP=y