Makefile: Build final mpc85xx non-SPL image in standard file u-boot.bin

Currently Makefile produces final mpc85xx image when SPL is not used in
custom file u-boot-with-dtb.bin. It is quite confusing name as build
process produce also intermediate file standard file u-boot-dtb.bin (which
is just intermediate and not bootable). Other platforms use u-boot.bin
(UBOOT_BIN) as standard name for final bootable raw image.

So change Makefile rules and binman to produce final bootable file for
mpc85xx also into file u-boot.bin. There is just need for mpc85xx to not
define default rule for u-boot.bin then instruct binman (via DTS file) to
store final image into u-boot.bin (instead of u-boot-with-dtb.bin) and
finally rename target u-boot-with-dtb.bin to u-boot.bin.

With this change are also removed custom Makefile hacks for mpc85xx that it
produced non-standard output file. And also updated documentation.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Marek Behún <kabel@kernel.org>
diff --git a/Makefile b/Makefile
index 0d3d80e..b1dc785 100644
--- a/Makefile
+++ b/Makefile
@@ -997,10 +997,6 @@
 INPUTS-y += init_sp_bss_offset_check
 endif
 
-ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
-INPUTS-y += u-boot-with-dtb.bin
-endif
-
 ifeq ($(CONFIG_ARCH_ROCKCHIP)$(CONFIG_SPL),yy)
 # Binman image dependencies
 ifeq ($(CONFIG_ARM64),y)
@@ -1217,9 +1213,12 @@
 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
 	$(call if_changed,cat)
 
+ifneq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
 u-boot.bin: u-boot-dtb.bin FORCE
 	$(call if_changed,copy)
-else
+endif
+
+else ifneq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
 u-boot.bin: u-boot-nodtb.bin FORCE
 	$(call if_changed,copy)
 endif
@@ -1432,11 +1431,7 @@
 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -A $(ARCH) -T pblimage
 
-ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
-UBOOT_BIN := u-boot-with-dtb.bin
-else
 UBOOT_BIN := u-boot.bin
-endif
 
 MKIMAGEFLAGS_u-boot-lzma.img = -A $(ARCH) -T standalone -C lzma -O u-boot \
 	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
@@ -1604,7 +1599,7 @@
 endif
 
 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
-u-boot-with-dtb.bin: u-boot-nodtb.bin u-boot.dtb \
+u-boot.bin: u-boot-nodtb.bin u-boot.dtb \
 	$(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE
 	$(call if_changed,binman)
 
@@ -1670,12 +1665,8 @@
 ifeq ($(ARCH),arm)
 UBOOT_BINLOAD := u-boot.img
 else
-ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
-UBOOT_BINLOAD := u-boot-with-dtb.bin
-else
 UBOOT_BINLOAD := u-boot.bin
 endif
-endif
 
 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 			  --gap-fill=0xff