drivers: qcom: rpmh-rsc: Do not read back the register write on trigger

When triggering a TCS to send its contents, reading back the trigger
value may return an incorrect value. That is because, writing the
trigger may raise an interrupt which could be handled immediately and
the trigger value could be reset in the interrupt handler.

A write_tcs_reg_sync() would read back the value that is written and try
to match it to the value written to ensure that the value is written,
but if that value is different, we may see false error for same.

Reviewed-by: Douglas Anderson <[email protected]>
Signed-off-by: Lina Iyer <[email protected]>
Signed-off-by: Maulik Shah <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

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