feat(tpm): add tpm drivers and framework

Add tpm2 drivers to tf-a with adequate framework
-implement a fifo spi interface that works
 with discrete tpm chip.
-implement tpm command layer interfaces that are used
 to initialize, start and make measurements and
 close the interface.
-tpm drivers are built using their own make file
 to allow for ease in porting across platforms,
 and across different interfaces.

Signed-off-by: Tushar Khandelwal <tushar.khandelwal@arm.com>
Signed-off-by: Abhi Singh <abhi.singh@arm.com>
Change-Id: Ie1a189f45c80f26f4dea16c3bd71b1503709e0ea
diff --git a/changelog.yaml b/changelog.yaml
index 422b9da..3f06369 100644
--- a/changelog.yaml
+++ b/changelog.yaml
@@ -962,6 +962,9 @@
           - drivers/scmi-msg
           - scmi-msg
 
+      - title: TPM
+        scope: tpm
+
       - title: UFS
         scope: ufs