Merge tag 'at91-defconfig' of git://github.com/at91linux/linux-at91 into next/defconfig

Pull "First batch of AT91 defconfig update for 3.18" from Nicolas Ferre:

- a dependency needed for SPI flash
- enable sound on DT platforms
- cleanup of current defconfigs:
  - addition of new PWM subsystem and related drivers
  - addition of ADC/touchscreen, watchdog or USB depending on the SoC
  - addition of power/reset drivers activated during this development cycle
  - removal of obsolete config options

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'at91-defconfig' of git://github.com/at91linux/linux-at91:
  ARM: at91: sama5: update defconfig
  ARM: at91: at91sam9rl: update defconfig
  ARM: at91: at91sam9g45: update defconfig
  ARM: at91: at91sam9263: update defconfig
  ARM: at91: at91sam9261_9g10: update defconfig
  ARM: at91: at91sam9260_9g20: update defconfig
  ARM: at91: at91_dt: update defconfig
  ARM: at91/sama5_defconfig: enable sound support
  ARM: at91/at91_dt_defconfig: enable sound support
  ARM: at91: add MTD_SPI_NOR (new dependency for M25P80)