MIPS: SGI-IP27: Free some unused memory

[ Upstream commit 33d70856 ]

platform_device_add_data() duplicates the memory it is passed. So we can
free some memory to save a few bytes that would remain unused otherwise.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Stable-dep-of: 11bec9cb ("MIPS: SGI-IP27: Fix platform-device leak in bridge_platform_create()")
Signed-off-by: Sasha Levin <sashal@kernel.org>