mpc83xx: Migrate arbiter config to Kconfig

Migrate the arbiter configuration to Kconfig.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/configs/MPC8349ITX_LOWBOOT_defconfig b/configs/MPC8349ITX_LOWBOOT_defconfig
index 4d55fd0..0a79d1e 100644
--- a/configs/MPC8349ITX_LOWBOOT_defconfig
+++ b/configs/MPC8349ITX_LOWBOOT_defconfig
@@ -99,6 +99,8 @@
 CONFIG_LBLAW3_LENGTH_64_KBYTES=y
 CONFIG_HID0_FINAL_ICE=y
 CONFIG_HID2_HBE=y
+CONFIG_ACR_PIPE_DEP_4=y
+CONFIG_ACR_RPTCNT_4=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_BOOTDELAY=6