Call depmod again to make sure all installed modules can be found

Without it, the DKMS-modules built before might have been missed.

For the same reason, kernel-<...>-devel package is now in Requires(post)
for kernel-<...>. The former must be installed completely before we call
depmod for the latter.

kernel.spec

@@ -514,7 +514,8 @@ Conflicts:	%kconflicts4 %kconflicts5		\
 Provides:	should-restart = system			\
 Suggests:	crda					\
 %if %build_devel					\
-Suggests:	%{kname}-%{1}-devel-%{buildrel}		\
+Requires:	%{kname}-%{1}-devel-%{buildrel}		\
+Requires(post):	%{kname}-%{1}-devel-%{buildrel}		\
 %endif							\
 %ifarch %{ix86}						\
 Conflicts:	arch(x86_64)				\
@@ -1496,7 +1497,14 @@ EOF
 # that is created then will be non-functional. But when the user installs
 # kernel-<...> package, that defunct initrd will be replaced with a working
 # one here.
+#
+# depmod is also needed, because some DKMS-modules might have been installed
+# when the devel package was installed but that was before the main modules
+# were installed.
+# This is also the reason the devel package is in Requires(post) for this
+# package now: it must be installed completely before we call depmod here.
 cat > $kernel_files-post <<EOF
+/sbin/depmod -a $KernelVer
 INITRD=/boot/initrd-$KernelVer.img
 /sbin/dracut -f \${INITRD} $KernelVer