8293887: AArch64 build failure with GCC 12 due to maybe-uninitialized warning in libfdlibm k_rem_pio2.c

Reviewed-by: erikj, shade, ihse

Author: Hao Sun

make/modules/java.base/lib/CoreLibraries.gmk

@@ -49,6 +49,7 @@ $(eval $(call SetupNativeCompilation, BUILD_LIBFDLIBM, \
     CFLAGS_windows_debug := -DLOGGING, \
     CFLAGS_aix := -qfloat=nomaf, \
     DISABLED_WARNINGS_gcc := sign-compare misleading-indentation array-bounds, \
+    DISABLED_WARNINGS_gcc_k_rem_pio2.c := maybe-uninitialized, \
     DISABLED_WARNINGS_clang := sign-compare misleading-indentation, \
     DISABLED_WARNINGS_microsoft := 4146 4244 4018, \
     ARFLAGS := $(ARFLAGS), \