dbginfo.sh: collect zipl boot menu entries from boot loader specification

Zipl.conf is collected via /etc/*.conf in CONFIGFILES but BLS snippets
do not appear in /etc/zipl.conf.

Complements v2.5.0 commit d280e5b1fa ("zipl: Add BootLoaderSpec support")

Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

CHANGELOG.md

@@ -5,6 +5,7 @@ Release history for s390-tools (MIT version)
   For Linux kernel version: 5.xx
 
   Changes of existing tools:
+  - dbginfo.sh: Collect zipl boot menu entries from boot loader specification
 
   Bug Fixes:
 

scripts/dbginfo.sh

@@ -358,6 +358,7 @@ LOGFILES="\
 ########################################
 
 CONFIGFILES="\
+  /boot/loader/entries/*.conf\
   /boot/grub2/grub.cfg\
   /boot/zipl/active_devices.txt\
   /boot/zipl/config\