README.clang: update FreeBSD instructions

The mentioned binutils port got removed while the patch was
pending. As Ian pointed out there is another port providing
the binutils for arm now. Update the instructions accordingly.

Cc: ian@FreeBSD.org
Cc: Tom Rini <trini@ti.com>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

doc/README.clang

@@ -34,21 +34,21 @@ make HOSTCC=clang CC="clang -target $TRIPLET -mllvm -arm-use-movt=0 -no-integrat
 FreeBSD 11 (Current):
 --------------------
 Since llvm 3.4 is currently in the base system, the integrated as is
-incapable of building U-Boot. Therefore gas from devel/arm-eabi-binutils
+incapable of building U-Boot. Therefore gas from devel/arm-gnueabi-binutils
 is used instead. It needs a symlinks to be picked up correctly though:
 
-ln -s /usr/local/bin/arm-eabi-as /usr/bin/arm-freebsd-eabi-as
+ln -s /usr/local/bin/arm-gnueabi-freebsd-as /usr/bin/arm-freebsd-eabi-as
 
 # The following commands compile U-Boot using the clang xdev toolchain.
 # NOTE: CROSS_COMPILE and target differ on purpose!
-export CROSS_COMPILE=arm-eabi-
+export CROSS_COMPILE=arm-gnueabi-freebsd-
 gmake CC="clang -target arm-freebsd-eabi --sysroot /usr/arm-freebsd -no-integrated-as -mllvm -arm-use-movt=0" rpi_b_defconfig
 gmake CC="clang -target arm-freebsd-eabi --sysroot /usr/arm-freebsd -no-integrated-as -mllvm -arm-use-movt=0" -j8
 
 Given that u-boot will default to gcc, above commands can be
 simplified with a simple wrapper script, listed below.
 
-/usr/local/bin/arm-eabi-gcc
+/usr/local/bin/arm-gnueabi-freebsd-gcc
 ---
 #!/bin/sh