Convert CONFIG_SYS_DV_CLKMODE et al to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_DV_CLKMODE
   CONFIG_SYS_DA850_PLL0_POSTDIV
   CONFIG_SYS_DA850_PLL0_PLLDIV1
   CONFIG_SYS_DA850_PLL0_PLLDIV2
   CONFIG_SYS_DA850_PLL0_PLLDIV3
   CONFIG_SYS_DA850_PLL0_PLLDIV4
   CONFIG_SYS_DA850_PLL0_PLLDIV5
   CONFIG_SYS_DA850_PLL0_PLLDIV6
   CONFIG_SYS_DA850_PLL0_PLLDIV7
   CONFIG_SYS_DA850_PLL1_POSTDIV
   CONFIG_SYS_DA850_PLL1_PLLDIV1
   CONFIG_SYS_DA850_PLL1_PLLDIV2
   CONFIG_SYS_DA850_PLL1_PLLDIV3

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/configs/omapl138_lcdk_defconfig b/configs/omapl138_lcdk_defconfig
index 944be2b..a693fba 100644
--- a/configs/omapl138_lcdk_defconfig
+++ b/configs/omapl138_lcdk_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_DAVINCI=y
 CONFIG_TARGET_OMAPL138_LCDK=y
+CONFIG_SYS_DA850_PLL1_PLLDIV3=0x8003
 CONFIG_TI_COMMON_CMD_OPTIONS=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y