boot, package, support, toolchain: switch to 2 spaces for the hash file

It's time to finally switch over globally to the new spacing format
that we have agreed on for the hash file, with 2 spaces as a separator
between fields.

This commit was mechanically generated using:

find . -type f -name '*.hash' | xargs sed -i 's%^md5[ \t]*\([^ \t]*\)[ \t]*\(.*\)$%md5  \1  \2%'
find . -type f -name '*.hash' | xargs sed -i 's%^sha1[ \t]*\([^ \t]*\)[ \t]*\(.*\)$%sha1  \1  \2%'
find . -type f -name '*.hash' | xargs sed -i 's%^sha256[ \t]*\([^ \t]*\)[ \t]*\(.*\)$%sha256  \1  \2%'
find . -type f -name '*.hash' | xargs sed -i 's%^sha512[ \t]*\([^ \t]*\)[ \t]*\(.*\)$%sha512  \1  \2%'

This commit can easily be backported on the LTS branch by re-running
the same commands, if needed.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit ebe5d9edfe)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

support/legal-info/buildroot.hash

@@ -1,2 +1,2 @@
 # Locally computed
-sha256 9755181e27175cb3510b4da8629caa406fb355a19aa8e7d55f06bf8ab33323c4  COPYING
+sha256  9755181e27175cb3510b4da8629caa406fb355a19aa8e7d55f06bf8ab33323c4  COPYING

support/testing/tests/download/br2-external/gitlab/package/gitlab-release/gitlab-release.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256 12b88efa4d0d95af08db05a50b3dcb217c0eb2bfc67b483779e33d498ddb2f95  iucode-tool_2.3.1.tar.xz
-sha256 ab15fd526bd8dd18a9e77ebc139656bf4d33e97fc7238cd11bf60e2b9b8666c6  COPYING
+sha256  12b88efa4d0d95af08db05a50b3dcb217c0eb2bfc67b483779e33d498ddb2f95  iucode-tool_2.3.1.tar.xz
+sha256  ab15fd526bd8dd18a9e77ebc139656bf4d33e97fc7238cd11bf60e2b9b8666c6  COPYING