Add HP_ScanJet_4400c
Someone else patch has already been commited to current.

*** 4.11-RELEASE/src/share/man/man4/uscanner.4.old	Tue Jun 20 10:59:23 2006
--- new/src/share/man/man4/uscanner.4	Tue Jun 20 10:59:51 2006
***************
*** 91,96 ****
--- 91,97 ----
  .It Hewlett Packard Scanjet 4100C
  .It Hewlett Packard Scanjet 4200C
  .It Hewlett Packard Scanjet 4300C
+ .It Hewlett Packard Scanjet 4400C
  .It Hewlett Packard Scanjet 5200C
  .It Hewlett Packard Scanjet 5300C
  .It Hewlett Packard Scanjet 5400C