dm: i2c: use CONFIG_IS_ENABLED macro for DM_I2C/DM_I2C_GPIO

Use CONFIG_IS_ENABLED() macro, which provides more convenient
way to check $(SPL)DM_I2C/$(SPL)DM_I2C_GPIO configs
for both SPL and U-Boot proper.

CONFIG_IS_ENABLED(DM_I2C) expands to:
- 1 if CONFIG_SPL_BUILD is undefined and CONFIG_DM_I2C is set to 'y',
- 1 if CONFIG_SPL_BUILD is defined and CONFIG_SPL_DM_I2C is set to 'y',
- 0 otherwise.

All occurences were replaced automatically using these bash cmds:
$ find . -type f -exec sed -i
     's/ifndef CONFIG_DM_I2C/if !CONFIG_IS_ENABLED(DM_I2C)/g' {} +
$ find . -type f -exec sed -i
    's/ifdef CONFIG_DM_I2C/if CONFIG_IS_ENABLED(DM_I2C)/g' {} +
$ find . -type f -exec sed -i
    's/defined(CONFIG_DM_I2C)/CONFIG_IS_ENABLED(DM_I2C)/g' {} +
$ find . -type f -exec sed -i
    's/ifndef CONFIG_DM_I2C_GPIO/if !CONFIG_IS_ENABLED(DM_I2C_GPIO)/g' {} +
$ find . -type f -exec sed -i
    's/ifdef CONFIG_DM_I2C_GPIO/if CONFIG_IS_ENABLED(DM_I2C_GPIO)/g' {} +
$ find . -type f -exec sed -i
    's/defined(CONFIG_DM_I2C_GPIO)/CONFIG_IS_ENABLED(DM_I2C_GPIO)/g' {} +

Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
index ed6dc9f..41bcf6f 100644
--- a/board/freescale/ls1012ardb/ls1012ardb.c
+++ b/board/freescale/ls1012ardb/ls1012ardb.c
@@ -43,7 +43,7 @@
 	puts("Board: LS1012ARDB ");
 
 	/* Initialize i2c early for Serial flash bank information */
-#if defined(CONFIG_DM_I2C)
+#if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *dev;
 
 	ret = i2c_get_chip_for_busnum(bus_num, I2C_MUX_IO_ADDR,
@@ -195,7 +195,7 @@
 	u8 io = 0;
 	int ret, bus_num = 0;
 
-#if defined(CONFIG_DM_I2C)
+#if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *dev;
 
 	ret = i2c_get_chip_for_busnum(bus_num, I2C_MUX_IO_ADDR,
@@ -234,7 +234,7 @@
 		 *	10 - eMMC Memory
 		 *	11 - SPI
 		 */
-#if defined(CONFIG_DM_I2C)
+#if CONFIG_IS_ENABLED(DM_I2C)
 		ret = dm_i2c_read(dev, I2C_MUX_IO_0, &io, 1);
 #else
 		ret = i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_0, 1, &io, 1);
@@ -273,7 +273,7 @@
 	u8 data = 0xf4, chip_addr = 0x24, offset_addr = 0x03;
 	int ret, bus_num = 0;
 
-#if defined(CONFIG_DM_I2C)
+#if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *dev;
 
 	ret = i2c_get_chip_for_busnum(bus_num, chip_addr,
@@ -338,7 +338,7 @@
 	u8 chip_addr = 0x24;
 	int ret, i, bus_num = 0;
 
-#if defined(CONFIG_DM_I2C)
+#if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *dev;
 
 	ret = i2c_get_chip_for_busnum(bus_num, chip_addr,
@@ -361,7 +361,7 @@
 	 *	  CS routed to SPI memory bank2
 	 */
 	for (i = 0; i < sizeof(data); i++) {
-#if defined(CONFIG_DM_I2C)
+#if CONFIG_IS_ENABLED(DM_I2C)
 		ret = dm_i2c_write(dev, offset_addr[i], &data[i], 1);
 #else /* Non DM I2C support - will be removed */
 		ret = i2c_write(chip_addr, offset_addr[i], 1, &data[i], 1);