[RESEND PATCH 3/3] firmware: imx-dsp: Export functions to request/free channels

From: Daniel Baluta In order to save power, we only need to request a channel when the communication with the DSP active. For this we export the following functions: - imx_dsp_request_channel, gets a channel with a given index - imx_dsp_free_channel, frees a channel with a given

[PATCH 3/3] firmware: imx-dsp: Export functions to request/free channels

From: Daniel Baluta In order to save power, we only need to request a channel when the communication with the DSP active. For this we export the following functions: - imx_dsp_request_channel, gets a channel with a given index - imx_dsp_free_channel, frees a channel with a given