cmake: Add service section to commo-rom linker generator

struct init_entry may point to a struct device or a struct service,
each ones belonging to device or service iterable section.
Service section being newly added, handling it in cmake relevantly.

Signed-off-by: Tomasz Bursztyka <tobu@bang-olufsen.dk>

Author: tbursztyka

cmake/linker_script/common/common-rom.cmake

@@ -12,6 +12,7 @@ zephyr_linker_section_obj_level(SECTION init LEVEL APPLICATION)
 zephyr_linker_section_obj_level(SECTION init LEVEL SMP)
 
 zephyr_iterable_section(NAME device NUMERIC KVMA RAM_REGION GROUP RODATA_REGION)
+zephyr_iterable_section(NAME service NUMERIC KVMA RAM_REGION GROUP RODATA_REGION)
 
 if(CONFIG_GEN_SW_ISR_TABLE AND NOT CONFIG_DYNAMIC_INTERRUPTS)
   # ld align has been changed to subalign to provide identical behavior scatter vs. ld.