Revert "Platform: Remove Musca_A platform code (Deprecation)"

This reverts commit a29d6695749aedb4015320af18e782b85744600a.

Reason for revert: Musca-A is still a reference platform for 1 user.

Change-Id: I3a96d5157677390360aaa82eac96b9810db58c43
diff --git a/docs/contributing/platform_deprecation.rst b/docs/contributing/platform_deprecation.rst
index 372c782..cbb3b83 100644
--- a/docs/contributing/platform_deprecation.rst
+++ b/docs/contributing/platform_deprecation.rst
@@ -57,7 +57,7 @@
 |    mps2/an539                | v1.2.0    |   N.A                             |
 +------------------------------+-----------+-----------------------------------+
 |    mps2/sse-200_aws          | v1.3.0    |   N.A                             |
-+------------------------------+-----------+-----------------------------------+
+|------------------------------------------------------------------------------|
 |    musca_a                   | v1.3.0    |   N.A                             |
 +------------------------------+-----------+-----------------------------------+