Kconfig: convert CONFIG_SYS_I2C_LPC32XX

Convert the CONFIG_SYS_I2C_LPC32XX configuration symbol from an include
directive to a Kconfig value.

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/devkit3250_defconfig b/configs/devkit3250_defconfig
index 9ae70f7..c0354bc 100644
--- a/configs/devkit3250_defconfig
+++ b/configs/devkit3250_defconfig
@@ -38,6 +38,7 @@
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_VERSION_VARIABLE=y
+CONFIG_SYS_I2C_LPC32XX=y
 # CONFIG_MMC is not set
 CONFIG_MTD=y
 CONFIG_MTD_NOR_FLASH=y
diff --git a/configs/work_92105_defconfig b/configs/work_92105_defconfig
index e9605ad..507f24f 100644
--- a/configs/work_92105_defconfig
+++ b/configs/work_92105_defconfig
@@ -42,6 +42,7 @@
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_VERSION_VARIABLE=y
+CONFIG_SYS_I2C_LPC32XX=y
 # CONFIG_MMC is not set
 CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index ce0d796..41065dd 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -169,6 +169,12 @@
 	help
 	  Add support for the NXP i.MX LPI2C driver.
 
+config SYS_I2C_LPC32XX
+	bool "LPC32XX I2C driver"
+	depends on ARCH_LPC32XX
+	help
+	  Enable support for the LPC32xx I2C driver.
+
 config SYS_I2C_MESON
 	bool "Amlogic Meson I2C driver"
 	depends on DM_I2C && ARCH_MESON
diff --git a/include/configs/devkit3250.h b/include/configs/devkit3250.h
index 921a38c..465d9ce 100644
--- a/include/configs/devkit3250.h
+++ b/include/configs/devkit3250.h
@@ -41,7 +41,6 @@
  * I2C
  */
 #define CONFIG_SYS_I2C
-#define CONFIG_SYS_I2C_LPC32XX
 #define CONFIG_SYS_I2C_SPEED		100000
 
 /*
diff --git a/include/configs/work_92105.h b/include/configs/work_92105.h
index 076a1b0..d498c8f 100644
--- a/include/configs/work_92105.h
+++ b/include/configs/work_92105.h
@@ -47,7 +47,6 @@
  * I2C driver
  */
 
-#define CONFIG_SYS_I2C_LPC32XX
 #define CONFIG_SYS_I2C
 #define CONFIG_SYS_I2C_SPEED 350000
 
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 624d851..ca6066b 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -2542,7 +2542,6 @@
 CONFIG_SYS_I2C_LDI_ADDR
 CONFIG_SYS_I2C_LM75_ADDR
 CONFIG_SYS_I2C_LM90_ADDR
-CONFIG_SYS_I2C_LPC32XX
 CONFIG_SYS_I2C_LPC32XX_SLAVE
 CONFIG_SYS_I2C_LPC32XX_SPEED
 CONFIG_SYS_I2C_MAC1_BUS