AMD SB800 based boards: Use `#include <sb_cimx.h>` instead of `"sb_cimx.h"`

Due to

    $ more src/southbridge/amd/cimx/sb800/Makefile.inc
    […]
    romstage-y += cfg.c
    romstage-y += early.c
    romstage-y += smbus.c

    ramstage-y += cfg.c
    ramstage-y += late.c
    […]

`src/southbridge/amd/cimx/sb800/` is passed with the switch `-I` to
the compiler, where it is also going to find the header file
`sb_cimx.h`. Therefore use `#include <sb_cimx>` everywhere, which is
what some AMD SB800 based boards already do.

The only effect is, that the compiler will not needlessly look into
directories which do not contain the header file [1].

The following command was used for the replacement.

    $ git grep -l sb_cimx.h src/mainboard/ | xargs sed -i 's/#include "sb_cimx.h"/#include <sb_cimx.h>/'

[1] http://gcc.gnu.org/onlinedocs/cpp/Search-Path.html

Change-Id: I96ab34bac1524e6c38c85dfe9d99cb6ef55e6d7c
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/3118
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/amd/inagua/romstage.c b/src/mainboard/amd/inagua/romstage.c
index a03d5a7..d46d4ab 100644
--- a/src/mainboard/amd/inagua/romstage.c
+++ b/src/mainboard/amd/inagua/romstage.c
@@ -35,7 +35,7 @@
 #include "cpu/x86/lapic/boot_cpu.c"
 #include "drivers/pc80/i8254.c"
 #include "drivers/pc80/i8259.c"
-#include "sb_cimx.h"
+#include <sb_cimx.h>
 #include "SBPLATFORM.h"
 
 void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx)