[site/landing] Add Rivos partner logo

Signed-off-by: Alex Bradbury <asb@lowrisc.org>
diff --git a/site/landing/config.toml b/site/landing/config.toml
index 64c6010..1939006 100644
--- a/site/landing/config.toml
+++ b/site/landing/config.toml
@@ -23,6 +23,7 @@
 partner_nuvoton = "https://www.nuvoton.com"
 partner_wd = "https://www.westerndigital.com/"
 partner_seagate = "https://www.seagate.com"
+partner_rivos = "https://www.rivosinc.com"
 
 [[deployment.targets]]
 name = "staging"
diff --git a/site/landing/layouts/index.html b/site/landing/layouts/index.html
index ebbbeea..9987156 100644
--- a/site/landing/layouts/index.html
+++ b/site/landing/layouts/index.html
@@ -257,6 +257,9 @@
         <a href="{{ .Site.Params.partner_seagate }}" class="partner" target="_blank">
           <img src="https://static.opentitan.org/img/partners/seagate.svg" alt="Seagate">
         </a>
+        <a href="{{ .Site.Params.partner_rivos }}" class="partner" target="_blank">
+          <img src="https://static.opentitan.org/img/partners/rivos.svg" alt="Rivos Inc.">
+        </a>
       </div>
 
       <div class="partner-quote">