Convert CONFIG_SYS_BR0_PRELIM et al to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_BR0_PRELIM
   CONFIG_SYS_OR1_PRELIM
   CONFIG_SYS_BR1_PRELIM
   CONFIG_SYS_OR2_PRELIM
   CONFIG_SYS_BR2_PRELIM
   CONFIG_SYS_OR2_PRELIM
   CONFIG_SYS_BR3_PRELIM
   CONFIG_SYS_OR3_PRELIM
   CONFIG_SYS_BR4_PRELIM
   CONFIG_SYS_OR4_PRELIM
   CONFIG_SYS_BR5_PRELIM
   CONFIG_SYS_OR5_PRELIM
   CONFIG_SYS_BR6_PRELIM
   CONFIG_SYS_OR6_PRELIM
   CONFIG_SYS_BR7_PRELIM
   CONFIG_SYS_OR7_PRELIM

This also introduces CONFIG_SYS_BR0_PRELIM_BOOL as not all platforms
that can set these values do so.  Add the relevant SYS_BRx_PRELIM_BOOL
to platforms that had not been previously migrated.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ids8313_defconfig b/configs/ids8313_defconfig
index f21811f..4f77fd7 100644
--- a/configs/ids8313_defconfig
+++ b/configs/ids8313_defconfig
@@ -158,6 +158,18 @@
 CONFIG_VERSION_VARIABLE=y
 CONFIG_BOOTCOUNT_LIMIT=y
 CONFIG_BOOTCOUNT_I2C=y
+CONFIG_SYS_BR0_PRELIM_BOOL=y
+CONFIG_SYS_BR0_PRELIM=0xFF800801
+CONFIG_SYS_OR0_PRELIM=0xFF8008A7
+CONFIG_SYS_BR1_PRELIM_BOOL=y
+CONFIG_SYS_BR1_PRELIM=0xE1000C21
+CONFIG_SYS_OR1_PRELIM=0xFFFF87CE
+CONFIG_SYS_BR2_PRELIM_BOOL=y
+CONFIG_SYS_BR2_PRELIM=0xE2000801
+CONFIG_SYS_OR2_PRELIM=0xFFFE0C74
+CONFIG_SYS_BR3_PRELIM_BOOL=y
+CONFIG_SYS_BR3_PRELIM=0xE3000801
+CONFIG_SYS_OR3_PRELIM=0xFFFF8814
 CONFIG_SYS_I2C_LEGACY=y
 CONFIG_SYS_I2C_FSL=y
 CONFIG_SYS_FSL_I2C_OFFSET=0x3100