Run depmod before creating rootfs image

`depmod` needs to be run by `mkrootfs.sh` so that the kernel module
dependency information is included in the SquashFS image.  Without this
information, `modprobe` cannot install kernel modules at runtime.

mkinitramfs.sh

@@ -17,8 +17,6 @@ mountpoint -q tmp || mount -t tmpfs tmpfs tmp
 echo 'Copying kernel image to /boot/ ...' >&2
 cp -a "${destdir}"/lib/modules/"${kver}"/vmlinuz \
     "${destdir}"/boot/
-echo 'Running depmod ...' >&2
-chroot "${destdir}" depmod -a "${kver}"
 echo 'Building initramfs image ...' 2>&1
 chroot "${destdir}" dracut \
     --no-hostonly \

mkrootfs.sh

@@ -42,6 +42,10 @@ dnf --installroot "${destdir}" install -y \
     --setopt tsflags=noscripts \
     kernel \
     --
+kver=$(rpm --root "${destdir}" -q --qf '%{VERSION}-%{RELEASE}.%{ARCH}' kernel)
+if [ ! -f "${destdir}"/lib/modules/"${kver}"/modules.dep ]; then
+    chroot "${destdir}" depmod -a "${kver}"
+fi
 
 cp -p \
     "${srcdir}"/cmdline.txt \