CONFIG_PS3_ROM is not available for the default architecture 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

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: