[U-Boot] [PATCH] arm: Use mtune for Xscale

[Alexey Brodkin]

Otherwise with GCC 8 we see this warning [which is rendered to an error
with -Werror, which happens for buildman/travisci], see [1]:
------------------------------->8-------------------------------
cc1: warning: switch -mcpu=xscale conflicts with -march=armv5te switch
------------------------------->8-------------------------------

Interesting enough with GCC 7.3.0 (which is current default in buildman)
that change leads to another failure, see [2]:
------------------------------->8-------------------------------
Error: selected processor does not support `pld [lr]' in ARM mode
------------------------------->8-------------------------------

So I guess this change might be put in series with buildman toolchain
bump.

[1] https://travis-ci.org/abrodkin/u-boot/jobs/383219348
[2] https://travis-ci.org/abrodkin/u-boot/jobs/383594006

Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
Cc: Albert Aribaud <albert.u.boot at aribaud.net>
---
 arch/arm/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 680c6e8516dc..18e0193c43c0 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -37,7 +37,7 @@ tune-$(CONFIG_CPU_ARM920T)	=
 tune-$(CONFIG_CPU_ARM926EJS)	=
 tune-$(CONFIG_CPU_ARM946ES)	=
 tune-$(CONFIG_CPU_SA1100)	=-mtune=strongarm1100
-tune-$(CONFIG_CPU_PXA)		=-mcpu=xscale
+tune-$(CONFIG_CPU_PXA)		=-mtune=xscale
 tune-$(CONFIG_CPU_ARM1136)	=
 tune-$(CONFIG_CPU_ARM1176)	=
 tune-$(CONFIG_CPU_V7A)		=
-- 
2.17.0