swr: automake: add missing -I flag
swr: automake: add missing -I flag

When building from a release tarball (where the generated/built files
are in srcdir) in an OOT fashion we need to have both builddir and
srcdir in the includes list.

Otherwise we'll error out, as the file (header gen_knobs.h in this case)
won't be in the location where we are looking.

Cc: "12.0" <59f39c0db42d4479a46b02d4d2bc11120e37bb44@lists.freedesktop.org>
Cc: Tim Rowley <54947742fe7299a578dbb84f6c782c6c4c668d8f@intel.com>
Signed-off-by: Emil Velikov <f20878473f414da183da19ee25c8722cc1d711e4@collabora.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler