How to use dual PCIe on ASR1826S(Kagu)
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Dual PCIE wifi use RTL8812FR and RTL8192FR
RTL8812FR and RTL8192FR share the same driver code. package/kernel/realtek-wl/rtl8192fr/src/rtl8192cd_driver/

ASR1826s dual pcie use drivers/pci/host/pcie-kagu.c as pcie driver, and drivers/misc/pcie_dual_rfkill.c as pcie rfkill driver.
And dual Pcie couldn't support suspend/resume. need to disable "echo mem > /sys/power/state" 

ASR1826s single PCIE share driver/pci/host/pcie-falcon.c with ASR1803/ASR1803E, and share drivers/misc/pcie8x_rfkill.c with ASR1803
RTL8812FR and RTL8192FR only support wext mode.

1. prepare kernel
   copy marvell/linux/arch/arm/boot/dts/asr1826s-2pcie.dtsi to replease asr1826s.dtsi
   copy asr1826s-p801-2pcie.dts to replease asr1826s-p801.dts
2. prepare kernel config
   copy target/linux/mmp/asr1826s/config-3.10-2pcie to replease target/linux/mmp/asr1826s/config-3.10

3. menuconfig.
   make defconfig_asr1826sp801_2pcie
   


