No, sorry I cannot as I do not use FC$ or use Red Hat supplied kernels. The idea of the kernel-debuginfo is something new to me, I have built my own kernels for a few years now and I never seen a kernel-debuginfo file bult. This includes building from the Red Hat source as well as the kernel.org source.
Nothing is stopping you from keeping the old kernel and installing the new, many keep at least one older kernel available when installing the new kernel;
Download the new kernel and do; rpm -ivh kernel-<version>.rpm or build your own.
FYI: Just because Red Hat /Fedora choose to require the kernel-drm for the xorg files and now no longer has this in the kernels they supply is not a shoe stopper. Download the xorg-x11 source rpm and modify the spec file to remove this requirement;
# kernel-drm requirement is so DRI works properly. The kernel RPM package
# should have a "Provides: kernel-drm = 4.2.0". Future kernels that provide
# new kernel-drm, should list all supported DRM interfaces with multiple
# Provides: lines. The 4.2.0 DRM is backward compatible with XFree86 4.1.0
# also. <email@example.com>
Requires: kernel-drm = 4.3.0
Then rebuild the binary files. Or add the Provides line(s) to a new kernel spec file.
Secondly, I must have kernel-debuginfo. I want to experiment
with system tap for which this kernel-debuginfo is a must.
Then you need the kernel-<version>.src.rpm and build your own. Please read;
Building a kernel for the Red Hat family is a bit different then shown in the kernel-rebuild guide, the steps in order are;
make menuconfig (or the others as shown by the rebuild guide)
If you rebuild a kernel from the src.rpm as supplied by Red Hat / Fedora then commands from the FC4 Installation are required before attempting to build the kernel;
rpmbuild -bp --target $(arch) kernel-2.6.spec