arch/powerpc/cpu/mpc8xxx/ddr/interactive.c: Fix GCC 4.6 build warning

Fix:

interactive.c: In function 'fsl_ddr_interactive':
interactive.c:1357:15: warning: variable 'len' set but not used [-Wunused-but-set-variable]

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
1 file changed