[FS#237] ramips: kmod-sdhci-mt7620 causes kernel panic

[LEDE Bugs]

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

User who did this - Andrew Yong (ndoo) 

Attached to Project - LEDE Project
Summary - ramips: kmod-sdhci-mt7620 causes kernel panic
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Tested on MT7621 (SamKnows SK-WB8 and MikroTik RB750Gr3
 - HEAD
 - Build kmod-sdhci-mt7620 into kernel and watch it boot, then panic (especially if no card is plugged in)

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=237