sysutils/u-boot: Bring back usb patch

The patch is still needed at least on rockchip platform where
we probably don't do everything correctly for usb bring up.
This is also needed is the next boot stage is usb.

Reported by:	kevans

sysutils/u-boot-master/Makefile

@@ -4,6 +4,7 @@
 
 PORTNAME=	u-boot
 PORTVERSION=	${UBOOT_VERSION}
+PORTREVISION=	1
 CATEGORIES=	sysutils
 PKGNAMESUFFIX?=	-${MODEL}
 MASTER_SITES=	https://ftp.denx.de/pub/u-boot/ \

sysutils/u-boot-master/files/patch-boot__bootm.c

+From 7d25c0b01248fbfbbcdf668cc1c080fe0b54978f Mon Sep 17 00:00:00 2001
+From: Emmanuel Vadot <manu@FreeBSD.org>
+Date: Sat, 7 Nov 2020 19:42:31 +0100
+Subject: [PATCH 2/2] Add FreeBSD hack that does not disable usb when
+ efi_exit_boot_service is called
+Content-Type: text/plain; charset=UTF-8
+
+---
+ common/bootm.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/common/bootm.c b/common/bootm.c
+index b3377490b3..22476fc7c9 100644
+--- boot/bootm.c
++++ boot/bootm.c
+@@ -458,7 +458,12 @@ ulong bootm_disable_interrupts(void)
+ 	 * updated every 1 ms within the HCCA structure in SDRAM! For more
+ 	 * details see the OpenHCI specification.
+ 	 */
++	/*
++	 * FreeBSD Hack, on some board this cause efi_exit_bootservice to hang
++	 * for some yet unknown reason.
++	 * This only does this when doing netboot ???
+ 	usb_stop();
++	*/
+ #endif
+ 	return iflag;
+ }
+-- 
+2.28.0
+