Staging: pohmelfs: fix spaces and TAB coding style issue in config.c

This is a patch to the config.c file that fixed up a TAB and spaces
Errors found by the checkpatch.pl tools, like:
	ERROR: switch and case should be at the same indent

Signed-off-by: Ruslan Pisarev <ruslan@rpisarev.org.ua>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>