ARM: OMAP2+: board-generic: add support for AM57xx family

AM57xx processor family are variants of DRA7 family of processors and
targetted at industrial and non-automotive applications.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
index 0edc903..ddd9bcd 100644
--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
+++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
@@ -85,6 +85,18 @@
 - DRA722
   compatible = "ti,dra722", "ti,dra72", "ti,dra7"
 
+- AM5728
+  compatible = "ti,am5728", "ti,dra742", "ti,dra74", "ti,dra7"
+
+- AM5726
+  compatible = "ti,am5726", "ti,dra742", "ti,dra74", "ti,dra7"
+
+- AM5718
+  compatible = "ti,am5718", "ti,dra722", "ti,dra72", "ti,dra7"
+
+- AM5716
+  compatible = "ti,am5716", "ti,dra722", "ti,dra72", "ti,dra7"
+
 - AM4372
   compatible = "ti,am4372", "ti,am43"