fsi: aspeed: convert to devm_platform_ioremap_resource

stable inclusion
from stable-v5.10.110
commit cb212c3f0de7818cc0977e179707a079cbaab3d5
bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cb212c3f0de7818cc0977e179707a079cbaab3d5



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[ Upstream commit a3469912 ]

Use devm_platform_ioremap_resource() to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20191228190631.26777-1-tiny.windzz@gmail.com


Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>