tegra: Add support for PWM

The pulse width/frequency modulation peripheral supports generating
a repeating pulse. It is useful for controlling LCD brightness.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 0b14075..cdc87eb 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -66,6 +66,7 @@
 	COMPAT_NVIDIA_TEGRA20_EMC_TABLE, /* Tegra20 memory timing table */
 	COMPAT_NVIDIA_TEGRA20_KBC,	/* Tegra20 Keyboard */
 	COMPAT_NVIDIA_TEGRA20_NAND,	/* Tegra2 NAND controller */
+	COMPAT_NVIDIA_TEGRA20_PWM,	/* Tegra 2 PWM controller */
 
 	COMPAT_COUNT,
 };