fix dependency

Author: bassiounix

libc/test/shared/CMakeLists.txt

@@ -21,6 +21,7 @@ add_fp_unittest(
     libc.src.__support.math.atan
     libc.src.__support.math.atan2
     libc.src.__support.math.atan2f
+    libc.src.__support.math.atan2f128
     libc.src.__support.math.atanf
     libc.src.__support.math.atanf16
     libc.src.__support.math.erff