usb: Rename ehci-fsl.h to ehci-ci.h

Most of ehci-fsl header describe USB controller
designed by Chipidea and used by various SoC vendors.

This patch renames it to a generic header: ehci-ci.h
Contents of file are not changed (so it contains several
references to freescale SoCs).

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/board/denx/m53evk/m53evk.c b/board/denx/m53evk/m53evk.c
index 5dd6cdd..934f009 100644
--- a/board/denx/m53evk/m53evk.c
+++ b/board/denx/m53evk/m53evk.c
@@ -22,7 +22,7 @@
 #include <spl.h>
 #include <fsl_esdhc.h>
 #include <asm/gpio.h>
-#include <usb/ehci-fsl.h>
+#include <usb/ehci-ci.h>
 #include <linux/fb.h>
 #include <ipu_pixfmt.h>