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 openzfs#16221 
Closes openzfs#16241

scripts/dkms.mkconf

@@ -26,6 +26,7 @@ PACKAGE_VERSION="${pkgver}"
 PACKAGE_CONFIG="${pkgcfg}"
 NO_WEAK_MODULES="yes"
 PRE_BUILD="configure
+  --disable-dependency-tracking
   --prefix=/usr
   --with-config=kernel
   --with-linux=\$(