memfault: Decrease coredump storage

Using memfault shell, it reports that the required storage
size is about 140 kB.
This patch reducecs the allocated partition to 162 kB (which
is also aligned on a 32 kB boundary), freeing up flash
for code.

Signed-off-by: Jan Tore Guggedal <[email protected]>

Author: jtguggedal

app/overlay-memfault.conf

@@ -14,7 +14,7 @@ CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD=y
 CONFIG_MEMFAULT_HTTP_ENABLE=y
 CONFIG_MEMFAULT_HTTP_CLIENT_TIMEOUT_MS=30000
 CONFIG_MEMFAULT_EVENT_STORAGE_SIZE=2048
-CONFIG_PM_PARTITION_SIZE_MEMFAULT_STORAGE=0x3FC000
+CONFIG_PM_PARTITION_SIZE_MEMFAULT_STORAGE=0x2A000
 CONFIG_MEMFAULT_COREDUMP_COLLECT_BSS_REGIONS=y
 CONFIG_MEMFAULT_COREDUMP_FULL_THREAD_STACKS=y
 ## Disable metric to remove error due to missing File System mount point