icu: Workaround buildpaths QA check, if TMPDIR is /build/tmp

icu: Workaround buildpaths QA check, if TMPDIR is /build/tmp

The file udatatst.c really contains the string /build/tmp. When building
with kas-container the build directory is /build and hence the TMPDIR
becomes /build/tmp. This triggers the QA check *buildpaths*. To work around
this, slightly modify the string in the source code.

% grep -n -C2 /build/tmp source/test/cintltst/udatatst.c
136-    char* path=(char*)malloc(sizeof(char) * (strlen(ctest_dataOutDir())
137-                                           + strlen(U_ICUDATA_NAME)
138:                                           + strlen("/build/tmp/..")+1 ) );
139-
140-    char        *icuDataFilePath = 0;

Signed-off-by: Jörg Sommer <joerg.sommer@navimatix.de>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>