PlutoSDR: Prepare for v0.32 release (part II)

Submodule buildroot bbb184a...1daa690:
  > Merge pull request #44 from analogdevicesinc/fix-motd
  > restore ssh authorized_keys from jffs2
  > add ssh authorized_keys to jffs2
  > configs: fix kernel version for vivado 2019.1
  > configs: zynq_pluto_defconfig: Updates for toolchain from Vivado 2019.1
  > board: pluto & m2k: Enable persistent ssh keys and passwd changes
  > board: pluto & m2k: change mount points
  > board/pluto/post-build: mount mtd2 as JFFS2 on /mnt/jffs2
  > package: libiio: Bump to Version 0.21
  > passwd: Apply upstream patch - initialize pointers correctly
  < configs: zynq_pluto_defconfig: Updates for toolchain from Vivado 2019.1
  < board: pluto & m2k: Enable persistent ssh keys and passwd changes
  < board: pluto & m2k: change mount points
  < board/pluto/post-build: mount mtd2 as JFFS2 on /mnt/jffs2
  < package: libiio: Bump to Version 0.21
  < passwd: Apply upstream patch - initialize pointers correctly

Submodule linux 1e3442d...6edc6cd:
  > arm64: dts: cn0506: add device-tree for ZCU102 carrier & RMII mode
  > arm: dts: cn0506: add hdl project tags
  > arch64: configs: adi_zynqmp_defconfig: Modify config to get Kuiper to boot
  > jesd204: fsm: rework jesd204 link start/stop FSM states
  > jesd204: fsm: remove needless comment
  > jesd204: fsm: implement per-device callbacks
  > jesd204: rework the state machine for top-device propagation
  > arm: configs: zynq_xcomm_adv7511_defconfig: Add fw for ADRV9008-1 and -2
  > arch: arm: zc706,zed: cn0506: add RMII device-trees
  > net: phy: adin: fix a warning about msleep
  > iio: frequency: hmc7044: Support for manual cap bank selection
  > iio: adc: ad9081: Add support for AD9082
  > jesd204: call propagation functions directly
  > jesd204: pass link index instead of opaque link object
  > jesd204: move con link index validation to a common place
  > jesd204: rework connection state validation
  > jesd204: core: allocate device ID on topology init
  > jesd204: remove explicit kref for uninit
  > jesd204: remove explicit parent reference
  > jesd204: throw away global device lock
  > mtd: spi-nor: Fix SPI-NOR-UniqueID prints
  < mtd: spi-nor: Fix SPI-NOR-UniqueID prints

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>