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/ls2080aqds/eth.c b/board/freescale/ls2080aqds/eth.c
index 4b7f855..914cd0a 100644
--- a/board/freescale/ls2080aqds/eth.c
+++ b/board/freescale/ls2080aqds/eth.c
@@ -125,12 +125,12 @@
 	};
 
 	int *riser_phy_addr = &xqsgii_riser_phy_addr[0];
-#ifdef CONFIG_DM_I2C
+#if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *udev;
 #endif
 
 	/* Set I2c to Slot 1 */
-#ifndef CONFIG_DM_I2C
+#if !CONFIG_IS_ENABLED(DM_I2C)
 	ret = i2c_write(0x77, 0, 0, &a, 1);
 #else
 	ret = i2c_get_chip_for_busnum(0, 0x77, 1, &udev);
@@ -151,7 +151,7 @@
 			mii_bus = 1;
 			dpmac_id = dpmac + 9;
 			a = 0xb;
-#ifndef CONFIG_DM_I2C
+#if !CONFIG_IS_ENABLED(DM_I2C)
 			ret = i2c_write(0x76, 0, 0, &a, 1);
 #else
 			ret = i2c_get_chip_for_busnum(0, 0x76, 1, &udev);
@@ -198,7 +198,7 @@
 				reg_pair[6].val = &ch_b_ctl2[j];
 
 				for (k = 0; k < 10; k++) {
-#ifndef CONFIG_DM_I2C
+#if !CONFIG_IS_ENABLED(DM_I2C)
 					ret = i2c_write(i2c_addr[dpmac],
 							reg_pair[k].addr,
 							1, reg_pair[k].val, 1);
@@ -277,12 +277,12 @@
 	const char *dev = "LS2080A_QDS_MDIO0";
 	int ret = 0;
 	unsigned short value;
-#ifdef CONFIG_DM_I2C
+#if CONFIG_IS_ENABLED(DM_I2C)
 	struct udevice *udev;
 #endif
 
 	/* Set I2c to Slot 1 */
-#ifndef CONFIG_DM_I2C
+#if !CONFIG_IS_ENABLED(DM_I2C)
 	ret = i2c_write(0x77, 0, 0, &a, 1);
 #else
 	ret = i2c_get_chip_for_busnum(0, 0x77, 1, &udev);
@@ -347,7 +347,7 @@
 			reg_pair[6].val = &ch_b_ctl2[j];
 
 			for (k = 0; k < 10; k++) {
-#ifndef CONFIG_DM_I2C
+#if !CONFIG_IS_ENABLED(DM_I2C)
 				ret = i2c_write(i2c_phy_addr,
 						reg_pair[k].addr,
 						1, reg_pair[k].val, 1);