mpc83xx: Migrate CONFIG_LCRR_* to Kconfig

Migrate the CONFIG_LCRR_* settings to Kconfig.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/configs/mpc8308_p1m_defconfig b/configs/mpc8308_p1m_defconfig
index f1559be..0789ecd 100644
--- a/configs/mpc8308_p1m_defconfig
+++ b/configs/mpc8308_p1m_defconfig
@@ -122,3 +122,5 @@
 CONFIG_OR2_AM_32_KBYTES=y
 CONFIG_OR2_SCY_4=y
 CONFIG_OR2_EHTR_1_CYCLE=y
+CONFIG_LCRR_DBYP_PLL_BYPASSED=y
+CONFIG_LCRR_CLKDIV_2=y