Add support for Genpd.

This patch adds support to dump/display the powerdomain statistics
in powerdebug.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
diff --git a/display.c b/display.c
index 5665ed5..9cd3b9d 100644
--- a/display.c
+++ b/display.c
@@ -73,6 +73,7 @@
 	[REGULATOR] = { .name = "Regulators" },
 	[SENSOR]    = { .name = "Sensors"    },
 	[GPIO]      = { .name = "Gpio"    },
+	[GENPD]	    = { .name = "Powerdomains" },
 };
 
 static void display_fini(void)