intel/fsp_baytrail: rename include folder baytrail to include/soc

This is to match the layout of the non-fsp baytrail to make comparisons
easier and possibly remove duplicate files.

Change-Id: I9a94842d724ab3826de711d398227e7bdc1045ff
Signed-off-by: Ben Gardner <gardner.ben@gmail.com>
Reviewed-on: https://review.coreboot.org/12686
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

src/soc/intel/fsp_baytrail/gpio.c

@@ -15,9 +15,9 @@
 
 #include <device/pci.h>
 #include <console/console.h>
-#include <baytrail/gpio.h>
-#include <baytrail/pmc.h>
-#include <baytrail/smm.h>
+#include <soc/gpio.h>
+#include <soc/pmc.h>
+#include <soc/smm.h>
 
 /*
  * GPIO-to-Pad LUTs