samples: eeprom: add gd32f450i_eval board

Add gd32f450i_eval board with AT2402C eeprom.

Signed-off-by: HaiLong Yang <[email protected]>

Author: cameled

samples/drivers/eeprom/README.rst

@@ -34,6 +34,15 @@ as follows:
    :shield: x_nucleo_eeprma2
    :compact:
 
+For :ref:`gd32f450i_eval` board. First bridge the JP5 to USART with the jumper cap,
+Then the sample can be built and executed for the  as follows:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/drivers/eeprom
+   :board: gd32f450i_eval
+   :goals: build flash
+   :compact:
+
 Sample Output
 =============
 

samples/drivers/eeprom/boards/gd32f450i_eval.conf

@@ -0,0 +1,3 @@
+CONFIG_I2C=y
+CONFIG_EEPROM_AT24=y
+CONFIG_EEPROM_INIT_PRIORITY=75

samples/drivers/eeprom/sample.yaml

@@ -13,7 +13,7 @@ common:
 tests:
   sample.drivers.eeprom:
     tags: eeprom
-    platform_allow: native_posix
+    platform_allow: native_posix gd32f450i_eval
   sample.drivers.eeprom.shield.x_nucleo_eeprma2:
     tags: eeprom shield
     depends_on: arduino_gpio arduino_i2c arduino_spi