[FS#1106] ar71xx: RB951Ui-2nD: LEDs not working with 4.9 kernel

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - João Chainho (joaochainho) 

Attached to Project - LEDE Project
Summary - ar71xx: RB951Ui-2nD: LEDs not working with 4.9 kernel
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Arch: ar71xx
Device: Mikrotik RB951Ui-2nD
Revision: SNAPSHOT r5126-8348106

LEDs aren't working with the new 4.9 kernel. Ethernet port LEDs are always on.
No LED found in **/sys/class/leds** other than WiFI.


[    3.102976] gpio gpiochip1: (74x164): tried to insert a GPIO chip with zero lines
[    3.110775] gpiochip_add_data: GPIOs 0..-1 (74x164) failed to register
[    3.117540] 74x164: probe of spi0.1 failed with error -22


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1106