docs(drtm): mention DRTM_SUPPORT as an experimental build option

In spite of the fact that makefile [1] indicates that DRTM_SUPPORT is
an experimental feature, it is better to mention the same in the
documentation of the build option as well.

[1]:
https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/tree/Makefile#n897

Change-Id: Ibfa328ec8ed685ce715d144d979ba37e4f49f82e
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>

diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index d5ded5ea7b4e8e46a965fdbcfcc4f4b0e9518562..a285d31c39fe7b0d9f23e9ccda33b932a86e5b90 100644 (file)
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -670,7 +670,7 @@ Common build options
    the measurements and recording them as per `PSA DRTM specification`_. For
    platforms which use BL2 to load/authenticate BL31 ``TRUSTED_BOARD_BOOT`` can
    be used and for the platforms which use ``RESET_TO_BL31`` platform owners
-   should have mechanism to authenticate BL31.
+   should have mechanism to authenticate BL31. This is an experimental feature.
 
    This option defaults to 0.