CONFIG_PS3_ROM is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

PS3 BD/DVD/CD-ROM Storage Driver

modulename: ps3rom.ko

configname: CONFIG_PS3_ROM

Linux Kernel Configuration
└─>PS3 Platform Options
└─>PS3 BD/DVD/CD-ROM Storage Driver
In linux kernel since version 2.6.23 (release Date: 2007-10-09)  
Include support for the PS3 ROM Storage.

This support is required to access the PS3 BD/DVD/CD-ROM drive.
In general, all users will say Y or M.
Also make sure to say Y or M to "SCSI CDROM support" later.

source code: