targets/osmesa: drop the -module tag from LDFLAGS
targets/osmesa: drop the -module tag from LDFLAGS

Gallium equivalent of commit 06ff751f97f(darwin: Fix install name of
libOSMesa)

Cc: "10.5 10.6" <59f39c0db42d4479a46b02d4d2bc11120e37bb44@lists.freedesktop.org>
Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler