FastRPC DSP domain would be set as secure if non-secure dsp property is not
added to the fastrpc DT node. Add this property to DT files of msm8916,
sdm845, sm8150, sm8250 and sm8350 so that nothing is broken after secure
domain patchset.

This patch is purely for backward compatibility reasons.
Signed-off-by: NJeya R <jeyr@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220214161002.6831-13-srinivas.kandagatla@linaro.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>