uboot-imx

sandbox: swap_case: Increase number of base address regs

At present the code overruns the bar[] array. Fix this.

At the same time, drop the leading / from the "/spl" path so that we can
run U-Boot SPL with:

   spl/u-boot-spl

rather than requiring:

   /path/to/spl/u-boot-spl

Reported-by: Coverity (CID: 131199)

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>