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/common/board_f.c b/common/board_f.c
index ca9a760..ddac2df 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -261,8 +261,7 @@
 void dram_init_banksize(void)
 	__attribute__((weak, alias("__dram_init_banksize")));
 
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) || \
-	defined(CONFIG_SYS_I2C)
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 static int init_func_i2c(void)
 {
 	puts("I2C:   ");
@@ -920,8 +919,7 @@
 	misc_init_f,
 #endif
 	INIT_FUNC_WATCHDOG_RESET
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) || \
-	defined(CONFIG_SYS_I2C)
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 	init_func_i2c,
 #endif
 #if defined(CONFIG_HARD_SPI)