linker: cc13x2_cc26x2: CCFG to linker snippets

Move the TI_CCFG linker section code into a dedicated snippet in the soc
directory.

Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>

include/arch/arm/aarch32/cortex_m/scripts/linker.ld

@@ -232,14 +232,6 @@ SECTIONS
 
     GROUP_END(ROMABLE_REGION)
 
-/* Some TI SoCs have a special configuration footer, at the end of flash. */
-#ifdef CONFIG_HAS_TI_CCFG
-    SECTION_PROLOGUE(.ti_ccfg,,)
-    {
-    KEEP(*(_TI_CCFG_SECTION_NAME))
-    } > FLASH_CCFG
-#endif
-
     /*
      * These are here according to 'arm-zephyr-elf-ld --verbose',
      * before data section.

soc/arm/ti_simplelink/cc13x2_cc26x2/CMakeLists.txt

@@ -7,3 +7,5 @@ zephyr_sources(ccfg.c)
 
 zephyr_library_sources_ifdef(CONFIG_PM    power.c)
 zephyr_library_sources_ifdef(CONFIG_PM_DEVICE   power.c)
+
+zephyr_linker_sources_ifdef(CONFIG_HAS_TI_CCFG SECTIONS ccfg.ld)

soc/arm/ti_simplelink/cc13x2_cc26x2/ccfg.ld

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2021, Commonwealth Scientific and Industrial Research
+ * Organisation (CSIRO) ABN 41 687 119 230.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+GROUP_START(FLASH_CCFG)
+
+SECTION_PROLOGUE(.ti_ccfg,,)
+{
+    KEEP(*(_TI_CCFG_SECTION_NAME))
+} GROUP_LINK_IN(FLASH_CCFG)
+
+GROUP_END(FLASH_CCFG)