uboot-imx

mpc83xx: remaining 8360 libfdt fixes

PCI clocks and QE frequencies weren't being updated, and the core clock
was being updated incorrectly.  This patch also adds a /memory node if
it doesn't already exist prior to update.

plus some cosmetic trimming to single line comments.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>