[SCSI] Make scsi_transport_spi.h includable by itself
[SCSI] Make scsi_transport_spi.h includable by itself

Add forward declarations to allow scsi_transport_spi.h to be compiled by
itself.

Signed-off-by: Matthew Wilcox <f80d0ca101e967b50b730ddf8e8aca0de85e8df6@wil.cx>
Signed-off-by: James Bottomley <407b36959ca09543ccda8f8e06721c791bc53435@SteelEye.com>

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