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>
Try to follow current NuttX's toolchain parttern:
Wasm.mk: Provide target rule for building wasm module
WASI-SDK.defs: Provide compile flags for building
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>