mmc: Get rid of CONFIG_MACH_MSM8974_EMMC_HW_RESET

Change-Id: Ibeb4d8c4c0e8188a48d468907dc42adce40be136
Signed-off-by: Rashed Abdel-Tawab <rashed@linux.com>
Revert "msm: sdcc: Use wifi_control_func to identify the wlan slot"

This reverts commit fab01a555a3003aa3984e476cc5a409d9ff89709.