kdump: add missing wc in crashcore rootfs

Tested: May 04 14:01:15 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[434]: The dumpfile is saved to STDOUT.
May 04 14:01:15 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[434]: makedumpfile Completed.
May 04 14:01:15 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[434]: 51609+0 records in
May 04 14:01:15 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[434]: 51609+0 records out
May 04 14:01:16 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[514]: 11+0 records in
May 04 14:01:16 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[514]: 11+0 records out
May 04 14:01:29 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[515]: 407+1 records in
May 04 14:01:29 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[515]: 407+1 records out
May 04 14:01:29 dddhg22-nfd01.prod.google.com gbmc-dump-ramoops.sh[516]: The dumpfile is saved to /run/log/kdump/kcore-2026_05_04_14_01_16.

Platforms-Affected: All
Google-Bug-Id: 507762548
Fusion-Link: fusion2 N/A
Change-Id: I9ef70009f353f80e3ba6d730bdb10aa87080dd73
Signed-off-by: Yuxiao Zhang <yuxiaozhang@google.com>

recipes-google/kdump-core/files/gbmc-kexec-prepare.sh.in

diff --git a/recipes-google/kdump-core/files/gbmc-kexec-prepare.sh.in b/recipes-google/kdump-core/files/gbmc-kexec-prepare.sh.in
index 32490df..3a2841f 100644
--- a/recipes-google/kdump-core/files/gbmc-kexec-prepare.sh.in
+++ b/recipes-google/kdump-core/files/gbmc-kexec-prepare.sh.in
@@ -27,7 +27,7 @@
   out="$(LD_TRACE_LOADED_OBJECTS=1 "$abs")" || exit
   echo "$out" | grep /lib/ | sed 's,.*\W\(/[^ ]*[.]so[^ ]*\)\W.*,\1,g' | xargs cp -t lib/ || exit
 done
-for lnk in {awk,cat,echo,expr,grep,mkdir,mount,reboot,rm,sed,sh,sleep,stty,test,tr}; do
+for lnk in {awk,cat,echo,expr,grep,mkdir,mount,reboot,rm,sed,sh,sleep,stty,test,tr,wc}; do
   busybox --list | grep -q "^$lnk$" || exit
   ln -s busybox bin/"$lnk"
 done