[PATCH edk2-platforms 0/4] Readme.md: various build example updates

["Leif Lindholm" <leif@nuviainc.com>]

As reported by Vin Xue, the URL for downloading GCC cross-toolchains
from Linaro went away - but they are now also released directly by ARM.
Update link to download page, and also update description to point out
that there are now aarch64->aarch32 cross compilers published.

Also, a patch from Vin Xue adding a full usage example for a
cross-compiling build command line.

Before that, a preparatory patch breaking a way too long line, and
another one aligning the documenting of build parallellism with current
reality.

Leif Lindholm (3):
  Readme.md: wrap long line
  Readme.md: update build parallellism information
  Readme.md: update ARM/AARCH64 cross-toolchain info

Vin Xue (1):
  Readme.md: add example command line to cross compiling section

 Readme.md | 40 +++++++++++++++-------------------------
 1 file changed, 15 insertions(+), 25 deletions(-)

Cc: Vin Xue <vinxue@outlook.com>
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2.20.1