staging: mt7621-mmc: Remove whitespace errors in mt6575_sd.h

The whitespace errors in the file mt6575_sd.h are fixed by using the
cleanfile script. Indentations with whitespaces are not changed
in this patch.

Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>