Revert "fix drivers/mmc/core/mmc.c and add changes in defconfig"

This reverts commit 08f2db0ba1a1c4c7f6cf55a4e3c30fc795f09905.
Revert "fs: sync: Asynchronous Fsync from HTC"

This reverts commit f8e2aa0c957e22c496b99e90786022ff065dcc19.