Staging:rts_pstor: fix coding style issue in rtsx_transport.c

This patch changes the space of the indent to the tab that warning
found by the checkpatch.pl tool.

Signed-off-by: Hitoshi <NAKAMORI&lt;hitoshi.nakamori@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>