Enable Wincompatible-function-pointer-types globally

Bug: b/257101299
Test: make checkbuild
Change-Id: I7a5adc0c04e420e6782371b3efc3fbffd367b3a2
diff --git a/cc/config/global.go b/cc/config/global.go
index 3eb4577..5b2191a 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -239,7 +239,6 @@
 		"-Wno-error=deprecated",          // in external/googletest/googletest
 		// New warnings to be fixed after clang-r475365
 		"-Wno-error=single-bit-bitfield-constant-conversion", // http://b/243965903
-		"-Wno-error=incompatible-function-pointer-types",     // http://b/257101299
 		"-Wno-error=enum-constexpr-conversion",               // http://b/243964282
 	}
 
@@ -249,6 +248,7 @@
 		// http://b/191699019
 		"-Wno-format-insufficient-args",
 		"-Wno-sizeof-array-div",
+		"-Wno-incompatible-function-pointer-types",
 		"-Wno-unused-but-set-variable",
 		"-Wno-unused-but-set-parameter",
 		"-Wno-unqualified-std-cast-call",