mainboard/google/kahlee: Add EC_IN_RW flag

Depthcharge was complaining that the GPIO for this flag wasn't set.
The GPIO also needs to be an input, not an output.

BUG=b:67614692
TEST=Depthcharge no longer complains that there is no GPIO set for flag5.
The system boots again.

Change-Id: Ib854e97b0a3aa42a95ceb8a42a9776f0345ff8b1
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/21936
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>

src/mainboard/google/kahlee/chromeos.c

@@ -22,6 +22,7 @@
 
 /* SPI Write protect */
 #define CROS_WP_GPIO		GPIO_142
+#define GPIO_EC_IN_RW		GPIO_15
 
 void fill_lb_gpios(struct lb_gpios *gpios)
 {
@@ -30,6 +31,9 @@ void fill_lb_gpios(struct lb_gpios *gpios)
 		{-1, ACTIVE_HIGH, get_recovery_mode_switch(), "recovery"},
 		{-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
 		{-1, ACTIVE_HIGH, 0, "power"},
+		{GPIO_EC_IN_RW, ACTIVE_HIGH, gpio_get(GPIO_EC_IN_RW),
+		 "EC in RW"},
+
 	};
 	lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
 }

src/mainboard/google/kahlee/gpio.c

@@ -37,8 +37,7 @@ const GPIO_CONTROL oem_kahlee_gpio[] = {
 						| FCH_GPIO_OUTPUT_ENABLE},
 
 	/* EC_IN_RW */
-	{15, Function1, FCH_GPIO_PULL_UP_ENABLE | FCH_GPIO_OUTPUT_VALUE
-						| FCH_GPIO_OUTPUT_ENABLE},
+	{15, Function1, FCH_GPIO_PULL_UP_ENABLE },
 
 	/* APU_I2C_3_SCL */
 	{19, Function1, FCH_GPIO_PULL_UP_ENABLE },