soc: mimx8ml8_m7: add .resource_table section to linker script

This is required to include the resource table in the build output. The
Linux remoteproc framework explicitly looks for this section while loading
the elf and may complain if the resource table is missing.

Signed-off-by: Matthias Fend <matthias.fend@emfend.at>

soc/arm/nxp_imx/mimx8ml8_m7/CMakeLists.txt

@@ -10,3 +10,8 @@ zephyr_sources(
   soc.c
   mpu_regions.c
 )
+
+if(CONFIG_OPENAMP_RSC_TABLE)
+  zephyr_linker_section(NAME .resource_table GROUP ROM_REGION NOINPUT)
+  zephyr_linker_section_configure(SECTION .resource_table KEEP INPUT ".resource_table*")
+endif()

soc/arm/nxp_imx/mimx8ml8_m7/linker.ld

@@ -18,3 +18,13 @@ MEMORY
      }
 
 #include <arch/arm/aarch32/cortex_m/scripts/linker.ld>
+
+SECTIONS
+     {
+#ifdef CONFIG_OPENAMP_RSC_TABLE
+        SECTION_PROLOGUE(.resource_table,, SUBALIGN(4))
+        {
+            KEEP(*(.resource_table*))
+        } GROUP_LINK_IN(ROMABLE_REGION)
+#endif
+     }