pass egl-symbols-check test on mips64el

pass egl-symbols-check test on mips64el

Without this patch the egl symbols check test fail on mips platform:

72/87 mesa:egl / egl-symbols-check        FAIL        0.20s (exit status 1)

src/egl/libEGL.so.1.0.0: unknown symbol exported: _fbss
src/egl/libEGL.so.1.0.0: unknown symbol exported: _fdata
src/egl/libEGL.so.1.0.0: unknown symbol exported: _ftext

See Mips Run say thoes special symbols are automatically defined by the
linker to allow programs to discover the start and end of their various
section. They are descended from conventions that grew up in UNIX-like OSs,
and are peculiar to the MIPS environment.

_fbss  :  Start of uninitialized data segment
_fdata :  Start of initialized data segment
_ftext :  Start of text segment

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: suijingfeng <suijingfeng@loongson.cn>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11955>