boards: posix: bsim: Update paths

Updates paths to account for legacy in them to prevent build
failures

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

boards/boards_legacy/posix/nrf_bsim/nrf52_bsim.dts

@@ -10,7 +10,7 @@
 #include <mem.h>
 #include <arm/nordic/nrf52833.dtsi>
 /* We resuse the pinctrl definitions directly from the real board : */
-#include <../boards/arm/nrf52833dk_nrf52833/nrf52833dk_nrf52833-pinctrl.dtsi>
+#include <../boards/boards_legacy/arm/nrf52833dk_nrf52833/nrf52833dk_nrf52833-pinctrl.dtsi>
 
 / {
 	model = "nrf52 bsim";

boards/boards_legacy/posix/nrf_bsim/nrf5340bsim_nrf5340_cpuapp.dts

@@ -115,4 +115,4 @@
 /* We re-use the IPC shared buffer definition from the real HW. But note the start address of the
  * buffer won't be used.
  */
-#include <../boards/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dtsi>
+#include <../boards/board_legacy/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dtsi>

boards/boards_legacy/posix/nrf_bsim/nrf5340bsim_nrf5340_cpunet.dts

@@ -77,4 +77,4 @@
 /* We re-use the IPC shared buffer definition from the real HW. But note the start address of the
  * buffer won't be used.
  */
-#include <../boards/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dtsi>
+#include <../boards/boards_legacy/arm/nrf5340dk_nrf5340/nrf5340_shared_sram_planning_conf.dtsi>