remoteproc: k3-dsp: Use symbolic error codes in error messages
The error message failed to send mailbox message (-EINVAL) is (for a human) more useful than failed to send mailbox message, status = -22 Adapt all error messages to use the symbolic names instead of the numeric constants. The error paths in .probe() make use of dev_err_probe() which automatically handles EPROBE_DEFER. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20231123211657.518181-7-u.kleine-koenig@pengutronix.de> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
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