The panda board used to require some special kernel command line
arguments before support was fully added to the device tree.  This is
not required any more with at least kernel 3.18 so it's safe to drop
those arguments now.  With older kernel such as 2.6.35 it's still
possible to specify some extra kernel arguments in the job definition.

Also, this more recent change in the device tree actually caused some
kernel alert message when using the old kernel command line arguments:

  b4778e787fe9 ("ARM: dts: omap4-panda-common: Add CMA pools and enable IPU & DSP")

Dropping them clears the error message.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>