src: Add missing include <stdint.h>

Change-Id: Idf10a09745756887a517da4c26db7a90a1bf9543
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29403
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/drivers/i2c/max98373/chip.h

@@ -16,6 +16,9 @@
 /*
  * Maxim MAX98373 audio codec devicetree bindings
  */
+
+#include <stdint.h>
+
 struct drivers_i2c_max98373_config {
 	/* I2C Bus Frequency in Hertz (default 400kHz) */
 	uint32_t bus_speed;

src/drivers/i2c/rt5663/chip.h

@@ -16,6 +16,9 @@
 /*
  * Realtek RT5663 audio codec devicetree bindings
  */
+
+#include <stdint.h>
+
 struct drivers_i2c_rt5663_config {
 	/* I2C Bus Frequency in Hertz (default 400kHz) */
 	unsigned int bus_speed;

src/drivers/i2c/w83795/chip.h

@@ -13,6 +13,8 @@
  * GNU General Public License for more details.
  */
 
+#include <stdint.h>
+
 struct drivers_i2c_w83795_config {
 	uint8_t fanin_ctl1;
 	uint8_t fanin_ctl2;