greybus: remove h from printk format specifier

See Documentation/core-api/printk-formats.rst.
h should no longer be used in the format specifier for printk.

Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20201215145306.1901598-1-trix@redhat.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>