[PATCH] wwwdocs: readings: Add PRU documents

[Dimitar Dimitrov]

With TI official wiki gone, let's put stable links to their proprietary
toolchain documents, which happen to describe ABI and instruction set.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
---
 htdocs/readings.html | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/htdocs/readings.html b/htdocs/readings.html
index 33ed5822..b3ffbe51 100644
--- a/htdocs/readings.html
+++ b/htdocs/readings.html
@@ -256,6 +256,8 @@ names.
 
  <li>pru
    <br />Manufacturer: Texas Instruments
+   <br /><a href="https://www.ti.com/lit/pdf/spruij2">PRU Assembly Instruction User Guide.</a>
+   <br /><a href="https://www.ti.com/lit/pdf/spruhv7">TI ABI Specification (see chapter 6).</a>
    <br /><a href="https://elinux.org/Category:PRU">Community PRU Documentation</a>
  </li>
 
-- 
2.31.1