ipm: remove the Intel Audio DSP CAVS host IPM driver

This IPM driver is not being used by SOF and is there simply for
a test which does not provide much additional value compared to
the existing host IPC tests. That IPM specific test has been
removed so there is no need to keep this driver in the tree.
This is in preparation to rewrite the host IPC driver to utilize
the IPC API. There is no need to maintain another driver that is
not being used in SOF.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

Author: dcpleung

drivers/ipm/CMakeLists.txt

@@ -10,7 +10,6 @@ zephyr_library_sources_ifdef(CONFIG_IPM_MHU ipm_mhu.c)
 zephyr_library_sources_ifdef(CONFIG_IPM_STM32_IPCC ipm_stm32_ipcc.c)
 zephyr_library_sources_ifdef(CONFIG_IPM_NRFX ipm_nrfx_ipc.c)
 zephyr_library_sources_ifdef(CONFIG_IPM_STM32_HSEM ipm_stm32_hsem.c)
-zephyr_library_sources_ifdef(CONFIG_IPM_CAVS_HOST ipm_cavs_host.c)
 zephyr_library_sources_ifdef(CONFIG_IPM_SEDI ipm_sedi.c)
 zephyr_library_sources_ifdef(CONFIG_IPM_IVSHMEM ipm_ivshmem.c)
 zephyr_library_sources_ifdef(CONFIG_ESP32_SOFT_IPM ipm_esp32.c)

drivers/ipm/Kconfig

@@ -74,7 +74,6 @@ config IPM_MBOX
 source "drivers/ipm/Kconfig.nrfx"
 source "drivers/ipm/Kconfig.imx"
 source "drivers/ipm/Kconfig.stm32"
-source "drivers/ipm/Kconfig.intel_adsp"
 source "drivers/ipm/Kconfig.ivshmem"
 source "drivers/ipm/Kconfig.sedi"
 

drivers/ipm/Kconfig.intel_adsp

@@ -9,3 +9,11 @@ config IPM_SEDI
 	  This option enables the Intel SEDI IPM(IPC) driver.
 	  This driver is simply a shim driver built upon the SEDI
 	  bare metal IPC driver in the hal-intel module
+
+config IPM_CALLBACK_ASYNC
+	bool "Deliver callbacks asynchronously"
+	help
+	  When selected, the driver supports "asynchronous" command
+	  delivery.  Commands will stay active after the ISR returns,
+	  until the application expressly "completes" the command
+	  later.