drm/radeon: Fix size used for benchmarking BO copies.
drm/radeon: Fix size used for benchmarking BO copies.

The incorrect size caused benchmark results to be inflated by a factor of 4.

Signed-off-by: Michel Dänzer <1a297f321b060fb2b39e134347a6a6a505c6609d@vmware.com>
Signed-off-by: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@redhat.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs