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/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h
index a9bd8b2..da7ca05 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/config.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h
@@ -183,7 +183,7 @@
 #elif defined(CONFIG_ARCH_LX2160A) || defined(CONFIG_ARCH_LX2162A)
 #define TZPC_BASE				0x02200000
 #define TZPCDECPROT_0_SET_BASE			(TZPC_BASE + 0x804)
-#if !defined(CONFIG_DM_I2C)
+#if !CONFIG_IS_ENABLED(DM_I2C)
 #define CONFIG_SYS_I2C
 #define CONFIG_SYS_I2C_EARLY_INIT
 #endif
diff --git a/arch/arm/include/asm/arch-lpc32xx/i2c.h b/arch/arm/include/asm/arch-lpc32xx/i2c.h
index f39b140..3918178 100644
--- a/arch/arm/include/asm/arch-lpc32xx/i2c.h
+++ b/arch/arm/include/asm/arch-lpc32xx/i2c.h
@@ -22,7 +22,7 @@
 	u32 stxfl;
 };
 
-#ifdef CONFIG_DM_I2C
+#if CONFIG_IS_ENABLED(DM_I2C)
 enum {
 	I2C_0, I2C_1, I2C_2,
 };
diff --git a/arch/arm/include/asm/mach-imx/mxc_i2c.h b/arch/arm/include/asm/mach-imx/mxc_i2c.h
index c016aa7..e8b330f 100644
--- a/arch/arm/include/asm/mach-imx/mxc_i2c.h
+++ b/arch/arm/include/asm/mach-imx/mxc_i2c.h
@@ -53,7 +53,7 @@
 #if CONFIG_IS_ENABLED(CLK)
 	struct clk per_clk;
 #endif
-#ifndef CONFIG_DM_I2C
+#if !CONFIG_IS_ENABLED(DM_I2C)
 	int (*idle_bus_fn)(void *p);
 	void *idle_bus_data;
 #else
diff --git a/arch/arm/include/asm/omap_i2c.h b/arch/arm/include/asm/omap_i2c.h
index ec7a145..9f0f272 100644
--- a/arch/arm/include/asm/omap_i2c.h
+++ b/arch/arm/include/asm/omap_i2c.h
@@ -3,7 +3,7 @@
 #ifndef _OMAP_I2C_H
 #define _OMAP_I2C_H
 
-#ifdef CONFIG_DM_I2C
+#if CONFIG_IS_ENABLED(DM_I2C)
 
 /* Information about a GPIO bank */
 struct omap_i2c_plat {