We should never access parents, as the sysfs hierarchy is in no way
stable. Use KERNELS== etc. to match on a parent, then access it via
$attr{} (which accesses the matching device, not the current device).
RUN{builtin}+="keyboard", GOTO="keyboard_end"
# device matching the input device name and the machine's DMI data
-IMPORT{builtin}="hwdb 'keyboard:name:$attr{device/name}:$attr{[dmi/id]modalias}'", \
+KERNELS=="input*", IMPORT{builtin}="hwdb 'keyboard:name:$attr{name}:$attr{[dmi/id]modalias}'", \
RUN{builtin}+="keyboard", GOTO="keyboard_end"
LABEL="keyboard_end"