linux-etxx00: fix rt2800usb rt55xx support

Enabling RT55xx support was only possible when CONFIG_RT2800PCI
was enabled, because the patch wrote the config entries into
the "if RT2800PCI" part of Kconfig file.

Signed-off-by: pieterg <pieterg@users.sourceforge.net>
oscam: remove junk in config files.
Merge remote-tracking branch 'openpli3/master' into HEAD