Implemented seek delay for hard disk and CD-ROM PIO read commands using fixed
values for the average access time (hd: 5 msec / cd: 80 msec). Hard disk write
and DMA mode commands are not affected yet.


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12114 6c8e4198-a580-4521-a02f-c9ae86df1db9