Revert "exFAT: Fix Soporte EXFAT"

This reverts commit cb9473b13452219bb451bf3f85bbf569b8683b66.
Revert "[1/2]smdk4412: exFAT Support"

This reverts commit c6191af0d1e823aa88696074236272262f71564e.
fs: add native exFAT support (Samsung OSRC 1.2.4)