kernel: enable CONFIG_MTD_SPLIT_SQUASHFS_ROOT

This enables dedicated "rootfs" splitter by default. We still keep
CONFIG_MTD_SPLIT_SQUASHFS_ROOT, so the old (built-in) splitter will be
used as a fallback in case of problems.
Once we decide the dedicated partitioner works stable, we should remove
the old one completely.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 42805

target/linux/generic/config-3.14

@@ -2128,7 +2128,7 @@ CONFIG_MTD_SPLIT=y
 CONFIG_MTD_SPLIT_FIRMWARE_NAME="firmware"
 # CONFIG_MTD_SPLIT_LZMA_FW is not set
 # CONFIG_MTD_SPLIT_SEAMA_FW is not set
-# CONFIG_MTD_SPLIT_SQUASHFS_ROOT is not set
+CONFIG_MTD_SPLIT_SQUASHFS_ROOT=y
 # CONFIG_MTD_SPLIT_UIMAGE_FW is not set
 # CONFIG_MTD_SST25L is not set
 # CONFIG_MTD_SWAP is not set