Merge OpenWrt 22.03.0-rc4

• 64e27cbe (origin/merge-openwrt-v22.03.0-rc4, merge-openwrt-v22.03.0-rc4) kernel: Restore 5.4 config for econet builds.
• 559f625b kernel: usb: Disable instalation of usb-xhci.ko for econet
• 43ddc307 kernel: Fix 4.19 build of kmod-crypto-arc4
• 1724f878 .gitignore: Add new installed targets path
• b148eb5d include: Add kernel-hashes for 4.19 and 5.4
• a4a10b28 mtd-utils: Uplift patches after OpenWrt 22.03rc4 merge
• 4ec76b3f Update feed [ iopsys ] OpenWrt 22.03.0-rc4
• 74c93966 Update feed [ econet ] OpenWrt 22.03.0-rc4
• a5990e8b Update feed [ openwrt_telephony ] OpenWrt 22.03.0-rc4
• b227e7ff Update feed [ openwrt_routing ] OpenWrt 22.03.0-rc4
• e7bc35fb Update feed [ openwrt_luci ] OpenWrt 22.03.0-rc4
• 83f183a8 Update feed [ openwrt_packages ] OpenWrt 22.03.0-rc4
• cfed5717 Update feed [ targets ] OpenWrt 22.03.0-rc4
• beaa6064 Update feed [ openwrt_core ] OpenWrt 22.03.0-rc4
• 4e327e6d Merge branch 'integrate-v21.02.2-and-v22.03.0-rc4' into devel