[klibc] fix build on native i386

When trying to build klibc on a native i386 box it
failed to include asm/posix_types.h

This was tracked down to a wrong include path.
For x86_64 it was correct.
Fix it for i386.

This should fix the build problem reported Phil Howard.

"FYI basically same patch was done and tested in OpenEmbedded on 2010-07-01"
- Andrea Adami <andrea.adami@gmail.com>

6f08923d3024f108b6262258c913573fb6ea78e6 fixed allmost all other unified
archs.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Phil Howard <kunnskaperen@gmail.com>
Signed-off-by: maximilian attems <max@stro.at>
diff --git a/usr/klibc/arch/i386/MCONFIG b/usr/klibc/arch/i386/MCONFIG
index ef112a4..1150ece 100644
--- a/usr/klibc/arch/i386/MCONFIG
+++ b/usr/klibc/arch/i386/MCONFIG
@@ -31,3 +31,6 @@
 # calls, and work on the memory models for this architecture
 # 96 MB - normal binaries start at 128 MB
 KLIBCSHAREDFLAGS	= -Ttext 0x06000200
+
+# Asm includes for i386 are in the merged x86 tree
+KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/x86/include