pta: remoteproc: Add command to release remote processor resources

This patch introduces a new PTA command `PTA_REMOTEPROC_RELEASE` to
release the resources associated with a remote processor.

- De

pta: remoteproc: Add command to release remote processor resources

This patch introduces a new PTA command `PTA_REMOTEPROC_RELEASE` to
release the resources associated with a remote processor.

- Definition of the `PTA_REMOTEPROC_RELEASE` PTA command the header file
- Implement the command in the stm32mp remote proc PTA to request the
clean of the remoteproc memories.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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pta: stm32mp: add new remoteproc PTA

Add remoteproc PTA for the stm32mp1 platform.
The PTA relies on the stm32_remoteproc driver for the remoteproc
management.
It is charge of providing interface fo

pta: stm32mp: add new remoteproc PTA

Add remoteproc PTA for the stm32mp1 platform.
The PTA relies on the stm32_remoteproc driver for the remoteproc
management.
It is charge of providing interface for authenticating firmware images
and managing the remote processor live cycle.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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