i2c, soft-i2c: switch to new multibus/multiadapter support

- added to soft_i2c driver new multibus/multiadpater support
- adapted all config files, which uses this driver

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
diff --git a/include/configs/sacsng.h b/include/configs/sacsng.h
index 54d55a0..efbf6b6 100644
--- a/include/configs/sacsng.h
+++ b/include/configs/sacsng.h
@@ -296,15 +296,13 @@
  * If the software driver is chosen, there are some additional
  * configuration items that the driver uses to drive the port pins.
  */
-#undef  CONFIG_HARD_I2C			/* I2C with hardware support	*/
-#define CONFIG_SOFT_I2C		1	/* I2C bit-banged		*/
-#define CONFIG_SYS_I2C_SPEED		400000	/* I2C speed and slave address	*/
-#define CONFIG_SYS_I2C_SLAVE		0x7F
-
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_SOFT		/* I2C bit-banged */
+#define CONFIG_SYS_I2C_SOFT_SPEED	400000
+#define CONFIG_SYS_I2C_SOFT_SLAVE	0x7F
 /*
  * Software (bit-bang) I2C driver configuration
  */
-#ifdef CONFIG_SOFT_I2C
 #define I2C_PORT	3		/* Port A=0, B=1, C=2, D=3 */
 #define I2C_ACTIVE	(iop->pdir |=  0x00010000)
 #define I2C_TRISTATE	(iop->pdir &= ~0x00010000)
@@ -314,7 +312,6 @@
 #define I2C_SCL(bit)	if(bit) iop->pdat |=  0x00020000; \
 			else    iop->pdat &= ~0x00020000
 #define I2C_DELAY	udelay(20)	/* 1/4 I2C clock duration */
-#endif /* CONFIG_SOFT_I2C */
 
 /* Define this to reserve an entire FLASH sector for
  * environment variables. Otherwise, the environment will be