Kconfig: Migrate CONFIG_RTC_M41T62 define to Kconfig

This patch moves the RTC M41T62 config define to Kconfig.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/bk4r1_defconfig b/configs/bk4r1_defconfig
index cf1fd0b..9e31b4a 100644
--- a/configs/bk4r1_defconfig
+++ b/configs/bk4r1_defconfig
@@ -40,6 +40,7 @@
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
 CONFIG_MII=y
+CONFIG_RTC_M41T62=y
 CONFIG_DM_SERIAL=y
 CONFIG_FSL_LPUART=y
 CONFIG_SPI=y
diff --git a/configs/m53menlo_defconfig b/configs/m53menlo_defconfig
index 795f8a3..dd7aed3 100644
--- a/configs/m53menlo_defconfig
+++ b/configs/m53menlo_defconfig
@@ -49,6 +49,7 @@
 CONFIG_NAND_MXC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_RTC_M41T62=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_HOST_ETHER=y
diff --git a/configs/pcm052_defconfig b/configs/pcm052_defconfig
index 0c8e31a..e207df5 100644
--- a/configs/pcm052_defconfig
+++ b/configs/pcm052_defconfig
@@ -35,5 +35,6 @@
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
 CONFIG_MII=y
+CONFIG_RTC_M41T62=y
 CONFIG_DM_SERIAL=y
 CONFIG_FSL_LPUART=y
diff --git a/configs/x600_defconfig b/configs/x600_defconfig
index c8f5f66..a96f54c 100644
--- a/configs/x600_defconfig
+++ b/configs/x600_defconfig
@@ -52,6 +52,7 @@
 CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_MII=y
+CONFIG_RTC_M41T62=y
 CONFIG_CONS_INDEX=0
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 6038b43..fd0009b 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -104,4 +104,10 @@
 	  clock with a wide array of features and 50 bytes of general-purpose,
 	  battery-backed RAM. The driver supports access to the clock and RAM.
 
+config RTC_M41T62
+	bool "Enable M41T62 driver"
+	help
+	  Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
+	  It is a serial (I2C) real-time clock (RTC) with alarm.
+
 endmenu
diff --git a/include/configs/m53menlo.h b/include/configs/m53menlo.h
index 94214b1..3fca28d 100644
--- a/include/configs/m53menlo.h
+++ b/include/configs/m53menlo.h
@@ -110,7 +110,6 @@
  * RTC
  */
 #ifdef CONFIG_CMD_DATE
-#define CONFIG_RTC_M41T62
 #define CONFIG_SYS_I2C_RTC_ADDR		0x68
 #define CONFIG_SYS_M41T11_BASE_YEAR	2000
 #endif
diff --git a/include/configs/pcm052.h b/include/configs/pcm052.h
index 9997795..e125a38 100644
--- a/include/configs/pcm052.h
+++ b/include/configs/pcm052.h
@@ -58,7 +58,6 @@
 #define CONFIG_SYS_I2C_MXC
 
 /* RTC (actually an RV-4162 but M41T62-compatible) */
-#define CONFIG_RTC_M41T62
 #define CONFIG_SYS_I2C_RTC_ADDR 0x68
 #define CONFIG_SYS_RTC_BUS_NUM 2
 
diff --git a/include/configs/x600.h b/include/configs/x600.h
index a6835eb..639da80 100644
--- a/include/configs/x600.h
+++ b/include/configs/x600.h
@@ -75,7 +75,6 @@
 #define CONFIG_SYS_I2C_SLAVE			0x02
 #define CONFIG_I2C_CHIPADDRESS			0x50
 
-#define CONFIG_RTC_M41T62	1
 #define CONFIG_SYS_I2C_RTC_ADDR	0x68
 
 /* FPGA config options */
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index b3f525f..bd14fe2 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -1661,7 +1661,6 @@
 CONFIG_RTC_FTRTC010
 CONFIG_RTC_IMXDI
 CONFIG_RTC_M41T11
-CONFIG_RTC_M41T62
 CONFIG_RTC_MC13XXX
 CONFIG_RTC_MCFRRTC
 CONFIG_RTC_MCP79411