ralink: set remove dwc_otg from default packages and use dwc2 instead

target/linux/ramips/mt7620a/profiles/00-default.mk

target/linux/ramips/rt305x/profiles/00-default.mk

target/linux/ramips/rt305x/profiles/allnet.mk

target/linux/ramips/rt305x/profiles/alpha.mk

target/linux/ramips/rt305x/profiles/aztech.mk

target/linux/ramips/rt305x/profiles/belkin.mk

target/linux/ramips/rt305x/profiles/broadway.mk

target/linux/ramips/rt305x/profiles/dlink.mk

target/linux/ramips/rt305x/profiles/fon.mk

target/linux/ramips/rt305x/profiles/freestation5.mk

target/linux/ramips/rt305x/profiles/n13u.mk

target/linux/ramips/rt305x/profiles/tenda.mk

target/linux/ramips/rt305x/profiles/upvel.mk