board: Add MT8183 pumpkin board support

Add the MT8183 pumpkin board support.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
diff --git a/board/mediatek/mt8183/Kconfig b/board/mediatek/mt8183/Kconfig
new file mode 100644
index 0000000..b75c3b8
--- /dev/null
+++ b/board/mediatek/mt8183/Kconfig
@@ -0,0 +1,13 @@
+if TARGET_MT8183
+
+config SYS_BOARD
+	default "mt8183"
+
+config SYS_CONFIG_NAME
+	default "mt8183"
+
+config MTK_BROM_HEADER_INFO
+	string
+	default "media=emmc"
+
+endif