spi/dw_spi: fix missing export of dw_spi_remove_host
spi/dw_spi: fix missing export of dw_spi_remove_host

So that interface drivers could be built as modules

Signed-off-by: Feng Tang <7685a6702c33a8c01ef22193062cb8069601cb3e@intel.com>
Signed-off-by: Grant Likely <9069e6f5a2b566e2674a0ba1e2bf39c12c195fad@secretlab.ca>

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