cmake: arc: update arc SoC to use SOC_LINKER_SCRIPT variable

This commit updates all arc SoCs to set SOC_LINKER_SCRIPT CMake
variable to point to active linker script directly.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>

soc/arc/snps_arc_hsdk/CMakeLists.txt

@@ -18,3 +18,5 @@ else()
 
   zephyr_ld_options(-Hlib=hs38_full)
 endif()
+
+set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

soc/arc/snps_arc_hsdk4xd/CMakeLists.txt

@@ -14,3 +14,5 @@ else()
 
   zephyr_ld_options(-Hlib=hs48_slc_full)
 endif()
+
+set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

soc/arc/snps_arc_iot/CMakeLists.txt

@@ -6,3 +6,5 @@ zephyr_sources(
   soc.c
   sysconf.c
   )
+
+set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

soc/arc/snps_emsdp/CMakeLists.txt

@@ -18,3 +18,5 @@ elseif(CONFIG_SOC_EMSDP_EM11D)
   zephyr_compile_options(-mmpy-option=6)
   zephyr_compile_options_ifdef(CONFIG_FPU -mfpu=fpuda_all)
 endif()
+
+set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

soc/arc/snps_emsk/CMakeLists.txt

@@ -8,3 +8,5 @@ zephyr_compile_options_ifdef(CONFIG_FPU -mfpu=fpuda_all)
 endif()
 
 zephyr_sources(soc_config.c)
+
+set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

soc/arc/snps_nsim/CMakeLists.txt

@@ -105,3 +105,5 @@ else()
 
   zephyr_ld_option_ifdef(CONFIG_SOC_NSIM_HS6X_SMP -Hlib=hs68_full_zephyr)
 endif()
+
+set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

soc/arc/snps_qemu/CMakeLists.txt

@@ -19,3 +19,5 @@ else()
 	endif()
 
 endif()
+
+set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")