arm: am437x: Introduce new board cm-t43

Add initial support for CM-T43, an AM437x based SoM.
This support includes: serial, MMC/eMMC, NAND, USB, ETH, I2C, GPIO, DRAM
detection.

Cc: Tom Rini <trini@konsulko.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
diff --git a/board/compulab/cm_t43/Kconfig b/board/compulab/cm_t43/Kconfig
new file mode 100644
index 0000000..a191889
--- /dev/null
+++ b/board/compulab/cm_t43/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_CM_T43
+
+config SYS_BOARD
+	default "cm_t43"
+
+config SYS_VENDOR
+	default "compulab"
+
+config SYS_SOC
+	default "am33xx"
+
+config SYS_CONFIG_NAME
+	default "cm_t43"
+
+endif