drivers/rtc/rtc-s3c.c: fix compiler warning

rtc-s3c.c:673:32: warning: `s3c_rtc_drv_data_array' defined but not used [-Wunused-variable]

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>