Merge OpenWRT v23.05.1

Uplift the relevant parts from openwrt 23.05.1:

package/base-files
package/network/config/firewall
package/network/config/netifd
package/network/services/dnsmasq
package/network/services/ppp
package/network/utils/ebtables
package/network/utils/iptables
package/network/utils/iw
package/network/utils/iwinfo
package/system/rpcd
package/utils/busybox

Keep from devel:

package/boot/arm-trusted-firmware-mediatek
package/boot/uboot-mediatek
package/kernel/mac80211
package/kernel/mt76
package/network/services/hostapd