am 17dcc5c5: Use makedev helper for device major and minor numbers

Merge commit '17dcc5c57dcffb919f3de65ff7a0134ffa3bd874' into gingerbread-plus-aosp

* commit '17dcc5c57dcffb919f3de65ff7a0134ffa3bd874':
  Use makedev helper for device major and minor numbers