treewide: replace nbd@openwrt.org with nbd@nbd.name

...s/0013-net-switchlib-add-driver-for-REALTEK-RTL8306.patch

package/devel/binutils/Makefile

package/devel/perf/Makefile

package/devel/strace/Makefile

package/devel/valgrind/Makefile

package/firmware/ath10k-firmware/Makefile

package/firmware/linux-firmware/Makefile

package/kernel/avila-wdt/src/avila-wdt.c

package/kernel/broadcom-wl/src/wlc.c

package/kernel/button-hotplug/src/button-hotplug.c

package/kernel/gpio-button-hotplug/src/gpio-button-hotplug.c

package/kernel/mac80211/Makefile

.../patches/300-ath9k-force-rx_clear-when-disabling-rx.patch

...1-ath9k-limit-retries-for-powersave-response-frames.patch

.../kernel/mac80211/patches/548-ath9k_enable_gpio_chip.patch

...rnel/mac80211/patches/549-ath9k_enable_gpio_buttons.patch

package/kernel/mt76/Makefile

package/kernel/trelay/src/trelay.c

package/libs/libconfig/Makefile

package/libs/libjson-c/Makefile