u-root-cmds: add missing cmds (#520052)

pkgs/by-name/u-/u-root-cmds/package.nix

@@ -14,6 +14,7 @@ u-root.overrideAttrs (prevAttrs: {
     "cmds/core/backoff"
     "cmds/core/base64"
     "cmds/core/basename"
+    "cmds/core/bind"
     "cmds/core/blkid"
     "cmds/core/brctl"
     "cmds/core/cat"
@@ -57,6 +58,7 @@ u-root.overrideAttrs (prevAttrs: {
     "cmds/core/losetup"
     "cmds/core/ls"
     "cmds/core/lsdrivers"
+    "cmds/core/lsfd"
     "cmds/core/lsmod"
     "cmds/core/man"
     "cmds/core/md5sum"
@@ -73,6 +75,7 @@ u-root.overrideAttrs (prevAttrs: {
     "cmds/core/nohup"
     "cmds/core/ntpdate"
     "cmds/core/pci"
+    "cmds/core/pidof"
     "cmds/core/ping"
     "cmds/core/poweroff"
     "cmds/core/printenv"
@@ -106,12 +109,14 @@ u-root.overrideAttrs (prevAttrs: {
     "cmds/core/true"
     "cmds/core/truncate"
     "cmds/core/ts"
+    "cmds/core/tsort"
     "cmds/core/tty"
     "cmds/core/umount"
     "cmds/core/uname"
     "cmds/core/uniq"
     "cmds/core/unmount"
     "cmds/core/unshare"
+    "cmds/core/update-rc.d"
     "cmds/core/uptime"
     "cmds/core/watchdog"
     "cmds/core/watchdogd"
@@ -126,6 +131,7 @@ u-root.overrideAttrs (prevAttrs: {
     "cmds/exp/bootvars"
     "cmds/exp/bzimage"
     "cmds/exp/cbmem"
+    "cmds/exp/cmd2pkg"
     "cmds/exp/console"
     "cmds/exp/crc"
     "cmds/exp/disk_unlock"
@@ -163,6 +169,7 @@ u-root.overrideAttrs (prevAttrs: {
     "cmds/exp/readpe"
     "cmds/exp/run"
     "cmds/exp/rush"
+    "cmds/exp/serial"
     "cmds/exp/smbios_transfer"
     "cmds/exp/smn"
     "cmds/exp/srvfiles"
@@ -174,6 +181,7 @@ u-root.overrideAttrs (prevAttrs: {
     "cmds/exp/tcpdump"
     "cmds/exp/tcz"
     "cmds/exp/tftp"
+    "cmds/exp/tftpd"
     "cmds/exp/traceroute"
     "cmds/exp/uefiboot"
     "cmds/exp/vboot"