staging/ft1000: fix the no brace needed warning in ft1000_read_fifo_len

as the if else statements enclose only one line, so braces around them are not
needed.

The following warning is fixed

drivers/staging/ft1000/ft1000-pcmcia/ft1000_hw.c:100: WARNING: braces {} are not necessary for any arm of this statement

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>