Add and use patchfiles that are in accordance with accepted Ports

Collection usage.

sysutils/u-boot-rpi2/Makefile

@@ -1,6 +1,5 @@
 # $FreeBSD$
 
-MAINTAINER=	manu@FreeBSD.org
 MASTERDIR=	${.CURDIR}/../u-boot-master
 
 MODEL=		rpi2
@@ -9,10 +8,7 @@ FAMILY=		rpi
 
 DEPENDS=	${LOCALBASE}/share/rpi-firmware/bootcode.bin:sysutils/rpi-firmware
 
-PATCHFILES+=	937869/mbox/?	\
-		939129/mbox/?
-
-CONFIG_FRAGMENT=	${.CURDIR}/files/rpi2_fragment
-FRAGMENT_NAME=	rpi2_fragment
+FRAGMENT_NAME=		rpi2_fragment
+CONFIG_FRAGMENT=	${.CURDIR}/files/${FRAGMENT_NAME}
 
 .include "${MASTERDIR}/Makefile"

sysutils/u-boot-rpi2/files/patch-include_configs_rpi.h

@@ -0,0 +1,19 @@
+--- include/configs/rpi.h.orig	2018-07-09 14:24:14 UTC
++++ include/configs/rpi.h
+@@ -69,6 +69,8 @@
+ #define CONFIG_MISC_INIT_R
+ #endif
+ 
++#define CONFIG_SYS_MMC_MAX_DEVICE	2
++
+ /* Console configuration */
+ #define CONFIG_SYS_CBSIZE		1024
+ 
+@@ -150,6 +152,7 @@
+ 
+ #define BOOT_TARGET_DEVICES(func) \
+ 	func(MMC, mmc, 0) \
++	func(MMC, mmc, 1) \
+ 	func(USB, usb, 0) \
+ 	func(PXE, pxe, na) \
+ 	func(DHCP, dhcp, na)