Documentation/am67: Document I2C support on t3-gem-o1.

Record the WKUP_I2C0 master in the board's Peripheral Support list.

Assisted-by: Claude Code:claude-opus-5
Signed-off-by: Ulaş Sertan Kemeç <sertan.usk@gmail.com>

Documentation/platforms/arm/am67/boards/t3-gem-o1/index.rst

@@ -100,6 +100,7 @@ main-domain R5F core:
 - **GPIO:** pad configuration and read/write over the AM67 GPIO controller.
 - **SPI:** MCU_MCSPI0 master, with the hardware chip-select driven per channel
   (used for the on-board ICM-20948 IMU and LPS22DF barometer).
+- **I2C:** WKUP_I2C0 master, registered as /dev/i2c2.
 
 Installation
 ============

arch/arm/src/am67/am67_i2c.c

@@ -52,9 +52,6 @@
 
 /* At least one I2C peripheral must be enabled */
 
-#if defined(CONFIG_AM67_I2C0) || defined(CONFIG_AM67_I2C1) || \
-    defined(CONFIG_AM67_WKUP_I2C0)
-
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
@@ -1479,4 +1476,3 @@ int am67_i2cbus_uninitialize(struct i2c_master_s *dev)
   return OK;
 }
 
-#endif /* CONFIG_AM67_I2C0 || CONFIG_AM67_I2C1 || CONFIG_AM67_WKUP_I2C0 */

boards/arm/am67/t3-gem-o1/src/am67_i2c.c

@@ -31,8 +31,6 @@
 #include <nuttx/i2c/i2c_master.h>
 #include "am67_i2c.h"
 
-#if defined(CONFIG_AM67_I2C0) || defined(CONFIG_AM67_WKUP_I2C0)
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -79,4 +77,3 @@ void am67_i2cdev_initialize(void)
 #endif
 }
 
-#endif /* CONFIG_AM67_I2C0 || CONFIG_AM67_WKUP_I2C0 */