board: lg: star: add Optimus 2X P990 support

The LG Optimus 2X is a touchscreen-based, slate-sized smartphone designed
and manufactured by LG that runs the Android operating system. The
Optimus 2X features a 4" WVGA display, an Nvidia Tegra 2 dual-core chip,
512 MB of RAM and extendable 8 GB of internal storage. UART-B is default
debug port.

Tested-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c197e3b..32b698a 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -86,6 +86,7 @@
 	tegra20-asus-tf101.dtb \
 	tegra20-asus-tf101g.dtb \
 	tegra20-harmony.dtb \
+	tegra20-lg-star.dtb \
 	tegra20-medcom-wide.dtb \
 	tegra20-motorola-daytona.dtb \
 	tegra20-motorola-olympus.dtb \