feat(da): add libspdm version 3.3.0

libspdm is a sample implementation that follows the DMTF SPDM
specifications DSP0274 [1].

libspdm project provides libraries that RMM imports as an interface
library named rmm-lib-spdm_requester to implement SPMD requester.

There are few patch files added in libspdm for below changes:
- Includes mbedtls headers, config file from RMM Mbed TLS
- Compiles cryptlib_mbedtls library with RMM Mbed TLS config

[1] https://www.dmtf.org/dsp/DSP0274

Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Change-Id: I977877de39d6fca65c4a6e03ed679221c8a4bb47
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index 0424287..b02f788 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -290,6 +290,7 @@
    RMM_HTML_COV_REPORT		,ON | OFF		,ON			,"Enable HTML output report for coverage analysis"
    RMM_CBMC_VIEWER_OUTPUT	,ON | OFF		,OFF			,"Generate report of CBMC results using the tool cbmc-viewer"
    RMM_CBMC_SINGLE_TESTBENCH	,			,OFF			,"Run CBMC on a single testbench instead on all of them"
+   RMM_CCA_DA			,ON | OFF		,OFF			,"Enable Device Assignment support in RMM (experimental)"
 
 .. _llvm_build: