Merge branch 'socfpga/dt' into next/dt

SoCFPGA DT changes from Dinh Nguyen.

* socfpga/dt:
  dts: Rename DW APB timer compatible strings
  dts: Deprecate ALTR as a vendor prefix
  of: add vendor prefix for Altera Corp.

Signed-off-by: Olof Johansson <olof@lixom.net>