rge: use C style comments instead of C++

[chris.longros_gmail.com]

Summary

FreeBSD style(9) mandates C style comments. The initial import from
OpenBSD left several C++ style // comments in if_rge.c and if_rgevar.h.
Replace them with proper /* */ comments.

Also fix a malformed comment that mixed // with a closing */.

Signed-off-by: Christos Longros <[e-mail]>

[adrian]

Lemme see which I can delete and which I need to keep and use.

I /think/ the commented out fields in if_rgevar.h can just be deleted. Would you mind just deleting those fields and resubmitting the diff?

Thanks!

[chris.longros_gmail.com]

I deleted the 4 commented-out struct members from if_rgevar.h (if_rxring, pci_intr_handle_t, pci_chipset_tag_t, pcitag_t).