ipc: openamp: Expose config options for MASTER/SLAVE builds

We can build the openamp library configured with VirtIO master
support, VirtIO slave support, or both.  By default both master
and slave code is enabled.  We can reduce code footprint by only
build master or slave as needed.

Expose Kconfig options for Master & Slave and set them accordingly in
the sample.

Here's the code reduction we see:

For the total image we see as 1260 byte reduction:
Memory region         Used Size  Region Size  %age Used
 FLASH [Master & Slave]:       30308 B       256 KB     11.56%
 FLASH [Master only]   :       29048 B       256 KB     11.08%

On the remote side we see a 828 byte reduction:

Memory region         Used Size  Region Size  %age Used
 FLASH [Master & Slave]:       11564 B        64 KB     17.65%
 FLASH [Slave only]    :       10736 B        64 KB     16.38%

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

modules/Kconfig.open-amp

@@ -7,9 +7,25 @@ config OPENAMP
 	help
 	  This option enables the OpenAMP IPC library
 
+if OPENAMP
+
 config OPENAMP_SRC_PATH
 	string "OpenAMP library source path"
 	default "open-amp"
 	depends on OPENAMP
 	help
 	  This option specifies the path to the source for the open-amp library
+
+config OPENAMP_MASTER
+	bool "OpenAMP Master Support"
+	default y
+	help
+	  This option enables support for OpenAMP VirtIO Master
+
+config OPENAMP_SLAVE
+	bool "OpenAMP Slave Support"
+	default y
+	help
+	  This option enables support for OpenAMP VirtIO Slave
+
+endif # OPENAMP

samples/subsys/ipc/openamp/prj.conf

@@ -4,3 +4,4 @@ CONFIG_TIMESLICE_SIZE=1
 CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_HEAP_MEM_POOL_SIZE=4096
 CONFIG_OPENAMP=y
+CONFIG_OPENAMP_SLAVE=n

samples/subsys/ipc/openamp/remote/prj.conf

@@ -5,3 +5,4 @@ CONFIG_PLATFORM_SPECIFIC_INIT=n
 CONFIG_HEAP_MEM_POOL_SIZE=4096
 CONFIG_OPENAMP=y
 CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=4096
+CONFIG_OPENAMP_MASTER=n

west.yml

@@ -95,7 +95,7 @@ manifest:
       revision: 2f896f74a5fc7220546cc23b50351506cd72ea96
       path: modules/hal/nxp
     - name: open-amp
-      revision: 68c18eae2e619ab161a217b1ce86e7ff37391a15
+      revision: 697716812a38fc05c1689cb9c6768bd412bf7153
       path: modules/lib/open-amp
     - name: loramac-node
       revision: 29e516ec585b1a909af2b5f1c60d83e7d4d563e3