[coreboot] patch: fix USB ports on DBE62, and other cs5536-based platforms

[ron minnich]

This change adds some debug prints, and a comment warning to dts on cs5536.

Most importantly it fixes a simple programming error which made it so most of
the sets on the USB were not doing anything. The bug is also in V2.

With this fix, the DBE62 USB ports all work!

If someone clones the fix to V2, it will also fix V2. Or, we can just convince
you to move forward to V3 :-)

Signed-off-by: Ronald G. Minnich <rminnich at gmail.com>

Also, please note, my remaining issue is to fix X11 on DBE62, then I
believe we are done. Has someone tested audio however?
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