Add USB3 kmods to the default package list, USB3 correctly works on
IPQ95xx hence it can be enabled.
While at it drop the NSS-DP as it was added by mistake as the ethrnet
platform is handled differently on this SoC with pending upstream
drivers.
Link: https://github.com/openwrt/openwrt/pull/17788
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>