OMAP3: Add common power code, README, and BeagleBoard

Add BeagleBoard support, common power code and README.

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 9bceba5..6bc3f53 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -486,6 +486,10 @@
 
 	armadillo	ARM720T
 
+Dirk Behme <dirk.behme@gmail.com>
+
+	omap3_beagle	ARM CORTEX-A8 (OMAP3530 SoC)
+
 Rishi Bhattacharya <rishi@ti.com>
 
 	omap5912osk	ARM926EJS