mmc: wmt-sdmmc: Use resource_size()
mmc: wmt-sdmmc: Use resource_size()

Used resource_size function instead of explicit computation.
Patch found using coccinelle.

Signed-off-by: Alexandru Gheorghiu <d0a91e316e80e0c7f9479d1fc49e188e326bc9cf@gmail.com>
Signed-off-by: Chris Ball <6ca7faee6ca9a094b1ee341f11b840a5608a8746@laptop.org>

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