powerpc/ps3: Add firmware version to proc

Add a new proc FS entry /proc/ps3/firmware-version that exports the
PS3's firmware version.

The firmware version is available through an LV1 hypercall, and we've
been printing it to the boot log, but haven't provided an easy way for
user utilities to get it.

Signed-off-by: Geoff Levand <geoff@infradead.org>
1 file changed