spi/dw_spi: add return value to empty mrst_spi_debugfs_init()
spi/dw_spi: add return value to empty mrst_spi_debugfs_init()

As per the function signature.

Signed-off-by: George Shore <9fd8de5fc2a7c2c0d469b2fff1afde4e5def37ba@georgeshore.com>
Signed-off-by: Grant Likely <9069e6f5a2b566e2674a0ba1e2bf39c12c195fad@secretlab.ca>

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