usb: ulpi: use DEFINE_SHOW_ATTRIBUTE to simplify ulpi_regs
Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code. No functional change. Signed-off-by:Liu Shixin <liushixin2@huawei.com> Acked-by:
Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20220922142505.3248167-1-liushixin2@huawei.com Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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