[Piglit] [PATCH] README: change recommended option from i386 to x86

[Constantine Charlamov]

Using -DCMAKE_SYSTEM_PROCESSOR=i386 makes no effect, i.e. `make` still
builds x86-64 files. It's possible that the behavior changed in some
version, here I'm using cmake version 3.7.2.

Besides, I don't know what options it makes gcc to use (gcc has no
-march=x86 option), but anything is better than ancient i368.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100017
Singed-off-by: Constantine Charlamov <Hi-Angel at yandex.ru>
---
 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README b/README
index 23ae46352..2facac714 100644
--- a/README
+++ b/README
@@ -89,7 +89,7 @@ Now build everything:
 -------------------
 
 On Linux, if cross-compiling a 32-bit build on a 64-bit host, then you must
-invoke cmake with option "-DCMAKE_SYSTEM_PROCESSOR=i386".
+invoke cmake with option "-DCMAKE_SYSTEM_PROCESSOR=x86".
 
 
 2.2 Ubuntu
-- 
2.11.1