dt-bindings: power: Add Tegra234 PCIe power domains

Add power domain IDs for the four PCIe power partitions found on
Tegra234.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

include/dt-bindings/power/tegra234-powergate.h

@@ -6,5 +6,17 @@
 
 #define TEGRA234_POWER_DOMAIN_AUD	2U
 #define TEGRA234_POWER_DOMAIN_DISP	3U
+#define TEGRA234_POWER_DOMAIN_PCIEX8A	5U
+#define TEGRA234_POWER_DOMAIN_PCIEX4A	6U
+#define TEGRA234_POWER_DOMAIN_PCIEX4BA	7U
+#define TEGRA234_POWER_DOMAIN_PCIEX4BB	8U
+#define TEGRA234_POWER_DOMAIN_PCIEX1A	9U
+#define TEGRA234_POWER_DOMAIN_PCIEX4CA	13U
+#define TEGRA234_POWER_DOMAIN_PCIEX4CB	14U
+#define TEGRA234_POWER_DOMAIN_PCIEX4CC	15U
+#define TEGRA234_POWER_DOMAIN_PCIEX8B	16U
+#define TEGRA234_POWER_DOMAIN_MGBEA	17U
+#define TEGRA234_POWER_DOMAIN_MGBEB	18U
+#define TEGRA234_POWER_DOMAIN_MGBEC	19U
 
 #endif