usb: rename board_usb_init_type to usb_init_type

This will be used by usb_lowlevel_init so it will
no longer be used by only board specific functions.

Move definition of enum usb_init_type higher in file
so that it will be available for usb_low_level_init.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
diff --git a/board/trizepsiv/conxs.c b/board/trizepsiv/conxs.c
index 830d5a8..1ddf05d 100644
--- a/board/trizepsiv/conxs.c
+++ b/board/trizepsiv/conxs.c
@@ -43,7 +43,7 @@
  * Miscelaneous platform dependent initialisations
  */
 
-int board_usb_init(int index, enum board_usb_init_type init)
+int board_usb_init(int index, enum usb_init_type init)
 {
 	writel((readl(UHCHR) | UHCHR_PCPL | UHCHR_PSPL) &
 		~(UHCHR_SSEP0 | UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE),
@@ -70,7 +70,7 @@
 	return 0;
 }
 
-int board_usb_cleanup(int index, enum board_usb_init_type init)
+int board_usb_cleanup(int index, enum usb_init_type init)
 {
 	return 0;
 }