FROMLIST: mmc: Add CONFIG_MMC_SIMULATE_MAX_SPEED

When CONFIG_MMC_SIMULATE_MAX_SPEED is enabled, Expose max_read_speed,
max_write_speed and cache_size default module parameters and sysfs
controls to simulate a slow eMMC device. Default values are 0 (off),
0 (off) and 4 MB respectively.

Signed-off-by: Mark Salyzyn <salyzyn@android.com>

Bug: 26976972
Patchset: mmc-simulate-max-speed

(patch from https://patchwork.kernel.org/patch/8714661/)
Signed-off-by: Mattias Nissler <mnissler@google.com>

Change-Id: Ifa1870e2b416664c2c00796021f805ac7cbcc453
4 files changed