linux-yocto/3.4: v3.4.9, unionfs, perf and configuration changes

linux-yocto/3.4: v3.4.9, unionfs, perf and configuration changes

Updating the SRCREVs for the following updates:

  - v3.4.8, v3.4.9

  - bug fixes:
      a4c7a04 perf: add SLANG_INC for slang.h
      e32ab98 unionfs: restore FD_* utility defines
      9f0fe58 unionfs: update unionfs fork to align with mainline
      b3fcc2f codel: refine one condition to avoid a nul rec_inv_sqrt
      ef7cf65 fq_codel: should use qdisc backlog as threshold
      3f0ed1d net: codel: fix build errors
      4c06aa1 net/codel: Add missing #include <linux/prefetch.h>
      2888bf2 codel: use u16 field instead of 31bits for rec_inv_sqrt
      6edeb2e codel: use Newton method instead of sqrt() and divides
      2faecd6 fq_codel: Fair Queue Codel AQM
      edca95f netem: add ECN capability

  - config/BSP updates:

      463299b meta: bump kver to v3.4.9
      6b961c8 CrystalForest: Enable PCI IOV feature
      4bc2238 meta: Add new pci iov feature
      70346e6 mpc8315: remove now obsolete CONFIG_MISC_DEVICES

(From OE-Core rev: 696252de3a8e5c1bdc0e2c8c2c92cdeefd0babe2)

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>