sh: drivers: convert to SPDX identifiers

Update license to use SPDX-License-Identifier instead of verbose license
text.

As original license mentioned, it is GPL-2.0 in SPDX.
Then, MODULE_LICENSE() should be "GPL v2" instead of "GPL".
See ${LINUX}/include/linux/module.h

"GPL" [GNU Public License v2 or later]
"GPL v2" [GNU Public License v2]

Link: http://lkml.kernel.org/r/87h8fsct0a.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

sh: Improved multi-resource handling for SH7780 PCI.

The SH7780 PCI controller supports 3 different ranges of PCI memory in
addition to its PCI I/O window. In the case of 29-bit mode, only 2 memory
windows are supported, while in 32-bit mode all 3 are visible. This
attempts to make the resource handling completely dynamic and to permit
platforms to map in as many apertures as they can handle.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

sh: Handle PCI controller resource conflicts.

register_pci_controller() can fail, but presently is a void function.
Change this over to an int so that we can bail early before continuing on
with post-registration initialization (such as throwing the controller in
to 66MHz mode in the case of the SH7780 host controller).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

sh: pci: Convert dreamcast to new-style interface.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

sh: pci: Tidy up the dreamcast PCI support.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>