uboot-imx

FSL: Generalize PIXIS reset command parsing.

Before, the order of arguments to the pixis_reset
command needed to be supplied in a hard-coded order.
Generalize the command parsing to allow any order.

Signed-off-by: James Yang <james.yang@freescale.com>
Acked-by: Jon Loeliger <jdl@freescale.com>