PlutoSDR: Prepare for v0.30 release

Submodule buildroot fea212a..2e4817b:
  > package: libad9361-iio: Bump to Version 0.2 - switch to release mechanism
  > S23udc, S45msd : Tell users if it is a AD9364, or a AD9363
  > package/libiio/libiio.mk: Bump to Version 0.17
  > Merge pull request #12 from analogdevicesinc/rgetz-html-updates
  > S40network: Be a little more pedantic
  > S45msd : indicate if one or two cores are enabled.

Submodule linux 0272a4d..c2041af:
  > arm: configs: zynq_pluto_defconfig: Enable ext4 filesystem support


Signed-off-by: Michael Hennerich <[email protected]>