Fix Me in file gpmc-onenand.c

[Nick Krause]

Hey Kevin,
I am using cscope to find fix mes in the latest git kernels that still
need cleanup. Furthermore  I seem to hitting one in a that file that
you maintain.
Due to this I am wondering should I remove this code or does it still
need to be in the mainline kernel and what mach-omap2 cpus does it
check for.
to support with this if statement.  I am pasting the FiXME and the
code that code around it.
Cheers Nick
else {
               /*
                * FIXME: Appears to be legacy code from initial ONENAND commit.
                 * Unclear what boards this is for and if this can be removed.
                 */
               if (!cpu_is_omap34xx())
                       onenand_sync.wait_on_read = true;
         }