rockchip: mkimage: add support for px30

Add the table entry for px30 socs.
The px30 has 10K of sram available.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/tools/rkcommon.c b/tools/rkcommon.c
index 831c2ad..83df82e 100644
--- a/tools/rkcommon.c
+++ b/tools/rkcommon.c
@@ -67,6 +67,7 @@
 };
 
 static struct spl_info spl_infos[] = {
+	{ "px30", "RK33", 0x2800, false },
 	{ "rk3036", "RK30", 0x1000, false },
 	{ "rk3128", "RK31", 0x1800, false },
 	{ "rk3188", "RK31", 0x8000 - 0x800, true },