lantiq: enable SMP for XRX200

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/lantiq/xrx200/config-default

 CONFIG_ADM6996_PHY=y
 CONFIG_AR8216_PHY=y
+CONFIG_CPU_MIPSR2_IRQ_EI=y
+CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_RMAP=y
 CONFIG_CRC16=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_LZO=y
@@ -14,6 +17,10 @@ CONFIG_LANTIQ_XRX200=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
+CONFIG_MIPS_MT=y
+# CONFIG_MIPS_MT_FPAFF is not set
+CONFIG_MIPS_MT_SMP=y
+CONFIG_MIPS_PERF_SHARED_TC_COUNTERS=y
 CONFIG_MTD_NAND=y
 CONFIG_MTD_NAND_ECC=y
 CONFIG_MTD_NAND_PLATFORM=y
@@ -25,15 +32,26 @@ CONFIG_MTD_UBI_BLOCK=y
 # CONFIG_MTD_UBI_FASTMAP is not set
 # CONFIG_MTD_UBI_GLUEBI is not set
 CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_NET_FLOW_LIMIT=y
 CONFIG_NLS=y
+CONFIG_NR_CPUS=2
 CONFIG_PCIE_LANTIQ=y
 CONFIG_POWER_RESET=y
 CONFIG_POWER_RESET_GPIO=y
 CONFIG_POWER_SUPPLY=y
+CONFIG_RCU_STALL_COMMON=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
 CONFIG_RTL8306_PHY=y
 CONFIG_RTL8366S_PHY=y
 CONFIG_RTL8367B_PHY=y
 CONFIG_RTL8367_PHY=y
+CONFIG_SMP=y
+CONFIG_SMP_UP=y
+CONFIG_SYNC_R4K=y
+CONFIG_SYS_SUPPORTS_SCHED_SMT=y
+CONFIG_SYS_SUPPORTS_SMP=y
+CONFIG_TREE_RCU=y
 CONFIG_UBIFS_FS=y
 CONFIG_UBIFS_FS_ADVANCED_COMPR=y
 CONFIG_UBIFS_FS_LZO=y
@@ -44,6 +62,7 @@ CONFIG_USB_COMMON=y
 # CONFIG_USB_EHCI_HCD is not set
 CONFIG_USB_SUPPORT=y
 # CONFIG_USB_UHCI_HCD is not set
+CONFIG_XPS=y
 CONFIG_XRX200_PHY_FW=y
 CONFIG_ZLIB_DEFLATE=y
 CONFIG_ZLIB_INFLATE=y