rockchip: mkimage: Add support for RV1108

Add support to mkimage for rv1108 soc, the max
spl code size for rv1108 is 6kb, and the spl
code should be packed by rksd, wether boot from
emmc or spi nor flash.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

tools/rkcommon.c

@@ -77,6 +77,7 @@ static struct spl_info spl_infos[] = {
 	{ "rk3288", "RK32", 0x8000, false, false },
 	{ "rk3328", "RK32", 0x8000 - 0x1000, false, false },
 	{ "rk3399", "RK33", 0x20000, false, true },
+	{ "rv1108", "RK11", 0x1800, false, false},
 };
 
 static unsigned char rc4_key[16] = {