soc/amd/*/chip.h: add missing gpio.h include

Since we need the GPIO defines in the devicetree settings, include
gpio.h in each SoC's chip.h file which will indirectly include the
soc-specific soc/gpio.h header instead of having it indirectly included
via soc/i2c.h.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id26721a6b8ae94784d4a90d7ccac28fef2be36dd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60977
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

src/soc/amd/cezanne/chip.h

@@ -4,6 +4,7 @@
 #define CEZANNE_CHIP_H
 
 #include <amdblocks/chip.h>
+#include <gpio.h>
 #include <soc/i2c.h>
 #include <soc/southbridge.h>
 #include <drivers/i2c/designware/dw_i2c.h>

src/soc/amd/picasso/chip.h

@@ -6,6 +6,7 @@
 #include <amdblocks/chip.h>
 #include <commonlib/helpers.h>
 #include <drivers/i2c/designware/dw_i2c.h>
+#include <gpio.h>
 #include <soc/i2c.h>
 #include <soc/iomap.h>
 #include <soc/southbridge.h>

src/soc/amd/stoneyridge/chip.h

@@ -7,6 +7,7 @@
 #include <stdint.h>
 #include <commonlib/helpers.h>
 #include <drivers/i2c/designware/dw_i2c.h>
+#include <gpio.h>
 #include <soc/i2c.h>
 #include <acpi/acpi_device.h>