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/MPC8349EMDS_SDRAM_defconfig b/configs/MPC8349EMDS_SDRAM_defconfig
index a157066..e3058f0 100644
--- a/configs/MPC8349EMDS_SDRAM_defconfig
+++ b/configs/MPC8349EMDS_SDRAM_defconfig
@@ -57,6 +57,33 @@
 CONFIG_LBLAW2_BASE=0xF0000000
 CONFIG_LBLAW2_NAME="SDRAM"
 CONFIG_LBLAW2_LENGTH_64_MBYTES=y
+CONFIG_ELBC_BR0_OR0=y
+CONFIG_BR0_OR0_NAME="FLASH"
+CONFIG_BR0_OR0_BASE=0xFE000000
+CONFIG_BR0_PORTSIZE_16BIT=y
+CONFIG_OR0_AM_32_MBYTES=y
+CONFIG_OR0_XAM_SET=y
+CONFIG_OR0_SCY_15=y
+CONFIG_OR0_CSNT_EARLIER=y
+CONFIG_OR0_ACS_HALF_CYCLE_EARLIER=y
+CONFIG_OR0_XACS_EXTENDED=y
+CONFIG_OR0_TRLX_RELAXED=y
+CONFIG_OR0_EHTR_8_CYCLE=y
+CONFIG_OR0_EAD_EXTRA=y
+CONFIG_ELBC_BR1_OR1=y
+CONFIG_BR1_OR1_NAME="BCSR"
+CONFIG_BR1_OR1_BASE=0xE2400000
+CONFIG_OR1_XAM_SET=y
+CONFIG_OR1_SCY_15=y
+CONFIG_OR1_CSNT_EARLIER=y
+CONFIG_ELBC_BR2_OR2=y
+CONFIG_BR2_OR2_NAME="SDRAM"
+CONFIG_BR2_OR2_BASE=0xF0000000
+CONFIG_BR2_PORTSIZE_32BIT=y
+CONFIG_BR2_MACHINE_SDRAM=y
+CONFIG_OR2_COLS_9=y
+CONFIG_OR2_ROWS_13=y
+CONFIG_OR2_EAD_EXTRA=y
 CONFIG_PCI_ONE_PCI1=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y