disable automatic dependency tracking for dkms builds

Previously the dkms build left some unwanted files
in /usr/lib/modules which could cause package
managers to not properly clean up old kernels.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Martin Wagner <martin.wagner.dev@gmail.com>
Closes #16221
Closes #16241