glibc: for i686 -Os is broken, too

toolchain/glibc/Makefile

@@ -6,8 +6,8 @@ include ../rules.mk
 include Makefile.inc
 include ${ADK_TOPDIR}/mk/buildhlp.mk
 
-# glibc does not compile with Os and CPU specific FLAGS for m68k/x86_64
-ifeq ($(ADK_TARGET_ARCH_X86_64)$(ADK_TARGET_ARCH_M68K),y)
+# glibc does not compile with Os and CPU specific FLAGS for m68k/x86_64/x86
+ifeq ($(ADK_TARGET_ARCH_X86)$(ADK_TARGET_ARCH_X86_64)$(ADK_TARGET_ARCH_M68K),y)
 TARGET_CFLAGS:=		-O2
 TARGET_CXXFLAGS:=	-O2
 endif