Fix ZEPHYR_DATA_REGION_START for zephyr 4 (#13)

Enable capture of data regions, and fix the conditional to specify the
correct region names.

Author: noahp

config/memfault_platform_config.h

@@ -10,7 +10,7 @@
 extern "C" {
 #endif
 
-#if defined(CONFIG_SOC_FAMILY_ESP32)
+#if defined(CONFIG_MEMFAULT_SOC_FAMILY_ESP32)
   #define ZEPHYR_DATA_REGION_START _data_start
   #define ZEPHYR_DATA_REGION_END _data_end
 #endif

prj.conf

@@ -74,7 +74,7 @@ CONFIG_LOG_PRINTK=n
 CONFIG_LOG_MODE_IMMEDIATE=y
 
 # Disable these temporarily, for debugging.
-CONFIG_MEMFAULT_COREDUMP_COLLECT_DATA_REGIONS=n
+CONFIG_MEMFAULT_COREDUMP_COLLECT_DATA_REGIONS=y
 CONFIG_MEMFAULT_COREDUMP_COLLECT_KERNEL_REGION=n
 CONFIG_MEMFAULT_COREDUMP_COLLECT_TASKS_REGIONS=n