linux-imx_3.14.28: fix initial MMC device detection
On Variscite Varsom we have three devices connected to MMC
* MMC1: eMMC
* MMC2: SDCard
* MMC3: Wifi
Without this patch only the first device was detected properly.
I found two workarounds which can be removed by this patch:
1. Variscite: booting from SDCard made possible by renumbering MMC devices [1].
2. BoundaryDevices: Add workqueues for each mmc_host [2]. This had been tested
here too but causes crashing sdcard for huge storage traffic.
[1] https://github.com/varigit/linux-2.6-imx/blob/imx_3.10.53_1.1.0_ga_var01/arch/arm/boot/dts/imx6qdl.dtsi / Line 879
[2] https://github.com/boundarydevices/linux-imx6/commit/
1d40159a995a298f16901bfb14ae3e0294c65691
Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
