Don't define inhibit_libc when building libgcc2.a.

	(CROSS_FLOAT_H): Define.

From-SVN: r10684

gcc/config/arm/t-semi

 # Just for these, we omit the frame pointer since it makes such a big
 # difference.  It is then pointless adding debugging.
-LIBGCC2_CFLAGS=-O2 -fomit-frame-pointer $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) -g0 \
-	-Dinhibit_libc
+LIBGCC2_CFLAGS=-O2 -fomit-frame-pointer $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) -g0 
 
 # Don't build enquire
 ENQUIRE=
+CROSS_FLOAT_H = $(srcdir)/config/arm/cross-float.h
 
 CROSS_LIBGCC1 = libgcc1-asm.a
 LIB1ASMSRC = arm/lib1funcs.asm