Added descriptions for 3 rows related to CVA6 (#48)

* Added description for 3 CVA6 related rows.

* Fixes

tristan-unified-access-page.html

@@ -104,7 +104,7 @@ <h3 id="cores">CORES</h3>
 <td>WI2.4.1, WI2.4.2, WI2.4.3, WI2.4.5</td>
 <td>Thales, Sysgo, TU Darmstadt, Bosch</td>
 <td>Design and Verification in progress</td>
-<td></td>
+<td>A configurable family of RISC-V application/embedded cores targetting FPGA and ASIC technologies</td>
 <td>Solderpad</td>
 </tr>
 <tr>
@@ -312,7 +312,7 @@ <h3 id="software">SOFTWARE</h3>
 <td>WI4.3.3</td>
 <td>Thales</td>
 <td>Initial release</td>
-<td></td>
+<td>A linux image for a CVA6-based embedded processor</td>
 <td>MIT</td>
 </tr>
 <tr>
@@ -321,7 +321,7 @@ <h3 id="software">SOFTWARE</h3>
 <td>WI4.3.3</td>
 <td>Thales</td>
 <td>Initial release</td>
-<td></td>
+<td>Guidance to set up baremetal and Linux-based debug on CVA6</td>
 <td>Apache</td>
 </tr>
 <tr>