Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
apps/examples/flowc: Adds the necessary termios controls to enable hardware flow control
apps/examples/flowc: Add a simple test of serial hardware flow control. This commit just defines the frame work. Hardware flow control is not yet enabled.