[bsp/stm32/stm32l496] add I2C config

bsp/stm32/stm32l496-st-nucleo/board/Kconfig

@@ -56,6 +56,44 @@ menu "On-chip Peripheral Drivers"
                 depends on BSP_USING_LPUART1 && RT_SERIAL_USING_DMA
                 default n
         endif
+    
+    menuconfig BSP_USING_I2C
+        bool "Enable I2C BUS"
+        default n
+        select RT_USING_I2C
+        select RT_USING_I2C_BITOPS
+        select RT_USING_PIN
+        if BSP_USING_I2C
+            menuconfig BSP_USING_I2C3
+                bool "Enable I2C3 BUS"
+                default y
+                if BSP_USING_I2C3
+                    comment "Notice: PC0 --> 32; PC1 --> 33" 
+                    config BSP_I2C3_SCL_PIN
+                        int "i2c3 scl pin number"
+                        range 1 176
+                        default 32
+                    config BSP_I2C3_SDA_PIN
+                        int "I2C3 sda pin number"
+                        range 1 176
+                        default 33
+                endif
+
+            menuconfig BSP_USING_I2C4
+                bool "Enable I2C4 BUS"
+                default n
+                if BSP_USING_I2C4
+                    comment "Notice: PC1 --> 33; PD6 --> 54" 
+                    config BSP_I2C4_SCL_PIN
+                        int "i2c4 scl pin number"
+                        range 1 176
+                        default 54
+                    config BSP_I2C4_SDA_PIN
+                        int "I2C4 sda pin number"
+                        range 1 176
+                        default 33
+                endif
+        endif
 
     config BSP_USING_ON_CHIP_FLASH
         bool "Enable on-chip FLASH"