target: move REPORT LUNS emulation to target_core_spc.c

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --cc drivers/target/target_core_device.c
Simple merge

diff --cc drivers/target/target_core_internal.h
Simple merge

diff --cc drivers/target/target_core_spc.c
Simple merge