i2c: Enable "old" i2c commands even when CONFIG_I2C_CMD_TREE is defined

The "old" i2c commands (iprobe, imd...) are now compiled in again,
even when the i2c command tree is enabled via the CONFIG_I2C_CMD_TREE
config option.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index 34571ee..755810d 100644
--- a/common/cmd_i2c.c
+++ b/common/cmd_i2c.c
@@ -969,7 +969,7 @@
 	"i2c sdram chip - print SDRAM configuration information\n"
 #endif  /* CFG_CMD_SDRAM */
 );
-#else /* CONFIG_I2C_CMD_TREE */
+#endif /* CONFIG_I2C_CMD_TREE */
 U_BOOT_CMD(
 	imd,	4,	1,	do_i2c_md,		\
 	"imd     - i2c memory display\n",				\
@@ -1024,6 +1024,5 @@
 	"      (valid chip values 50..57)\n"
 );
 #endif
-#endif  /* CONFIG_I2C_CMD_TREE */
 
 #endif	/* CFG_CMD_I2C */