staging: rtl8192e: reduce indentation

Delete tab aligning a statement with the right hand side of a
preceding assignment rather than the left hand side.

Found with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>