remoteproc: qcom: q6v5-mss: Add support for MSM8909

Port the initialization sequence necessary for booting the modem remote
processor on the MSM8909 SoC from Qualcomm's msm-3.10 release [1].
The sequence is actually similar to the existing one for MSM8996 and
MSM8998 except that there is no separate QDSP6SS_MEM_PWR_CTL register
and most of the "memories" are enabled at once instead of sequentially.

To reuse the existing code just insert some if statements where needed
and add a configuration similar to the one from MSM8916.

[1]: https://git.codelinaro.org/clo/la/kernel/msm-3.10/-/commit/56dcedc8dac8abff6b007f76a29430b2d0a44704



Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220908182433.466908-6-stephan.gerhold@kernkonzept.com