mpc83xx: Migrate CONFIG_SYS_{BR, OR}*_PRELIM to Kconfig

Migrate the BR/OR settings to Kconfig. These must be known at compile
time, so cannot be configured via DT.

Configuration of this crucial variable should still be somewhat
comfortable. Hence, make its fields configurable in Kconfig, and
assemble the final value from these.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/configs/MPC837XEMDS_defconfig b/configs/MPC837XEMDS_defconfig
index b3c1c87..9256aac 100644
--- a/configs/MPC837XEMDS_defconfig
+++ b/configs/MPC837XEMDS_defconfig
@@ -107,3 +107,44 @@
 # CONFIG_PCI is not set
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y
+CONFIG_ELBC_BR0_OR0=y
+CONFIG_BR0_OR0_NAME="FLASH"
+CONFIG_BR0_OR0_BASE=0xFE000000
+CONFIG_BR0_MACHINE_GPCM=y
+CONFIG_BR0_PORTSIZE_16BIT=y
+CONFIG_OR0_AM_32_MBYTES=y
+CONFIG_OR0_ACS_HALF_CYCLE_EARLIER=y
+CONFIG_OR0_CSNT_EARLIER=y
+CONFIG_OR0_EAD_EXTRA=y
+CONFIG_OR0_SCY_15=y
+CONFIG_OR0_XACS_EXTENDED=y
+CONFIG_OR0_XAM_SET=y
+CONFIG_OR0_TRLX_RELAXED=y
+CONFIG_OR0_EHTR_8_CYCLE=y
+CONFIG_ELBC_BR1_OR1=y
+CONFIG_BR1_OR1_NAME="BCSR"
+CONFIG_BR1_OR1_BASE=0xF8000000
+CONFIG_BR1_MACHINE_GPCM=y
+CONFIG_BR1_PORTSIZE_8BIT=y
+CONFIG_OR1_AM_32_KBYTES=y
+CONFIG_OR1_CSNT_EARLIER=y
+CONFIG_OR1_EAD_EXTRA=y
+CONFIG_OR1_SCY_15=y
+CONFIG_OR1_XACS_EXTENDED=y
+CONFIG_OR1_XAM_SET=y
+CONFIG_OR1_TRLX_RELAXED=y
+CONFIG_OR1_EHTR_8_CYCLE=y
+CONFIG_ELBC_BR3_OR3=y
+CONFIG_BR3_OR3_NAME="NAND"
+CONFIG_BR3_OR3_BASE=0xE0600000
+CONFIG_BR3_ERRORCHECKING_BOTH=y
+CONFIG_BR3_MACHINE_FCM=y
+CONFIG_BR3_PORTSIZE_8BIT=y
+CONFIG_OR3_AM_32_KBYTES=y
+CONFIG_OR3_BCTLD_NOT_ASSERTED=y
+CONFIG_OR3_RST_ONE_CLOCK=y
+CONFIG_OR3_SCY_1=y
+CONFIG_OR3_TRLX_RELAXED=y
+CONFIG_OR3_CHT_TWO_CLOCK=y
+CONFIG_OR3_CST_ONE_CLOCK=y
+CONFIG_OR3_EHTR_8_CYCLE=y