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/mpc8308_p1m_defconfig b/configs/mpc8308_p1m_defconfig
index 26601ff..f73084c 100644
--- a/configs/mpc8308_p1m_defconfig
+++ b/configs/mpc8308_p1m_defconfig
@@ -68,6 +68,8 @@
 CONFIG_SICR_IEEE1588_A_GPIO=y
 CONFIG_SICR_GTM_GPIO=y
 CONFIG_SICR_GPIOSEL_IEEE1588=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=5