Convert CONFIG_PCA953X to Kconfig

This converts the following to Kconfig:
   CONFIG_PCA953X

Cc: Uri Mashiach <uri.mashiach@compulab.co.il>
Signed-off-by: Tom Rini <trini@konsulko.com>

README

@@ -483,8 +483,6 @@ The following options need to be configured:
 		must also be configured. See I2C Support, below.
 
 - GPIO Support:
-		CONFIG_PCA953X		- use NXP's PCA953X series I2C GPIO
-
 		The CFG_SYS_I2C_PCA953X_WIDTH option specifies a list of
 		chip-ngpio pairs that tell the PCA953X driver the number of
 		pins supported by a particular chip.

configs/cl-som-imx7_defconfig

@@ -74,6 +74,7 @@ CONFIG_ETHPRIME="FEC"
 CONFIG_SPL_DM=y
 CONFIG_BOUNCE_BUFFER=y
 CONFIG_CMD_PCA953X=y
+CONFIG_PCA953X=y
 CONFIG_SYS_I2C_LEGACY=y
 CONFIG_SPL_SYS_I2C_LEGACY=y
 CONFIG_SYS_I2C_MXC=y

drivers/gpio/Kconfig

@@ -520,6 +520,10 @@ config SPL_DM_PCA953X
 	  Now, max 24 bits chips and PCA953X compatible chips are
 	  supported
 
+config PCA953X
+	bool "NXP's PCA953X series I2C GPIO (legacy driver)"
+	depends on !DM_PCA953X
+
 config MPC8XXX_GPIO
 	bool "Freescale MPC8XXX GPIO driver"
 	depends on DM_GPIO

include/configs/cl-som-imx7.h

@@ -21,7 +21,6 @@
 /* PMIC */
 #define CONFIG_POWER_PFUZE3000_I2C_ADDR	0x08
 
-#define CONFIG_PCA953X
 #define CFG_SYS_I2C_PCA953X_ADDR	0x20
 #define CFG_SYS_I2C_PCA953X_WIDTH	{ {0x20, 16} }
 

include/configs/imx8qxp_mek.h

@@ -110,10 +110,6 @@
 /* LPDDR4 board total DDR is 3GB */
 #define PHYS_SDRAM_2_SIZE		0x40000000	/* 1 GB */
 
-#ifndef CONFIG_DM_PCA953X
-#define CONFIG_PCA953X
-#endif
-
 /* Misc configuration */
 
 #endif /* __IMX8QXP_MEK_H */

include/configs/mx6sabreauto.h

@@ -15,7 +15,6 @@
 #define CONFIG_MXC_USB_PORTSC	(PORT_PTS_UTMI | PORT_PTS_PTW)
 #define CONFIG_MXC_USB_FLAGS	0
 
-#define CONFIG_PCA953X
 #define CFG_SYS_I2C_PCA953X_WIDTH	{ {0x30, 8}, {0x32, 8}, {0x34, 8} }
 
 #include "mx6sabre_common.h"