libsrp: removal

Remove the libsrp module which was only used by the now removed ibmvstgt
driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>

diff --cc drivers/scsi/Kconfig
Simple merge

diff --cc drivers/scsi/Makefile
Simple merge

diff --cc drivers/scsi/libsrp.c
Simple merge

diff --cc include/scsi/libsrp.h
Simple merge