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Merge tag 'tegra-for-4.2-emc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

Merge "ARM: tegra: Add EMC driver for v4.2-rc1" from Thierry Reding:

This introduces the EMC driver that's required to scale the external
memory frequency.

* tag 'tegra-for-4.2-emc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  memory: tegra: Add EMC frequency debugfs entry
  memory: tegra: Add EMC (external memory controller) driver
  memory: tegra: Add API needed by the EMC driver
  of: Add Tegra124 EMC bindings
  of: Document timings subnode of nvidia,tegra-mc