src/soc/rockchip: Add missing <{stddef,stdint}.h>

Change-Id: I0b7bdd9f46846bc9c3d9672b50dfe2fb166fcb78
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43945
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/soc/rockchip/common/i2c.c

@@ -10,6 +10,8 @@
 #include <soc/soc.h>
 #include <soc/i2c.h>
 #include <soc/clock.h>
+#include <stddef.h>
+#include <stdint.h>
 
 #define RETRY_COUNT	3
 /* 100000us = 100ms */

src/soc/rockchip/rk3399/spi_bitbang.c

@@ -8,6 +8,7 @@
 #include <soc/spi.h>
 #include <spi_bitbang.h>
 #include <spi_flash.h>
+#include <stddef.h>
 
 struct rockchip_bitbang_slave {
 	struct spi_bitbang_ops ops;