app: prj.conf: use Linux log format by default

Set CONFIG_LOG_OUTPUT_FORMAT_LINUX_TIMESTAMP=y for SOF builds
by default. This aligns the log timestamps to format used in Linux
kernel logs.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

app/prj.conf

@@ -29,6 +29,8 @@ CONFIG_LOG_PROCESS_THREAD_SLEEP_MS=100
 CONFIG_LOG_BUFFER_SIZE=4096
 # Use stack that is sufficient for SOF backends
 CONFIG_LOG_PROCESS_THREAD_STACK_SIZE=4096
+# Use Linux kernel style timestamp format
+CONFIG_LOG_OUTPUT_FORMAT_LINUX_TIMESTAMP=y
 
 # Requires heap_info() be implemented, but no Zephyr wrapper
 CONFIG_DEBUG_MEMORY_USAGE_SCAN=n