[nrf noup] Increase CHIP stack size

This commit increases the current CHIP stack size to allow building
with LTO and provide more buffer.

Signed-off-by: Łukasz Duda <lukasz.duda@nordicsemi.no>

Author: LuDuda

src/platform/nrfconnect/CHIPDevicePlatformConfig.h

@@ -215,7 +215,7 @@
 #endif // CHIP_DEVICE_CONFIG_CHIP_TASK_PRIORITY
 
 #ifndef CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE
-#define CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE 6144
+#define CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE 8192
 #endif // CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE
 
 #define CHIP_DEVICE_CONFIG_MAX_EVENT_QUEUE_SIZE 64