Makefile: Rename u-boot-spl.kwb to u-boot-with-spl.kwb

File name with pattern u-boot-spl* is used on all places except in kwb
image for binary with SPL-only code. Combined binary with both SPL and
proper U-Boot in other places has file name pattern u-boot-with-spl*.

Make it consistent also for kwb image and rename u-boot-spl.kwb to
u-boot-with-spl.kwb as this image contains both SPL and proper U-Boot code.

Also update documentation about file name changes.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/doc/kwboot.1 b/doc/kwboot.1
index 0863d19..a528fbb 100644
--- a/doc/kwboot.1
+++ b/doc/kwboot.1
@@ -149,25 +149,25 @@
 
 .SH "EXAMPLES"
 
-Instruct BootROM to enter boot Xmodem boot mode, send \fIu-boot-spl.kwb\fP
+Instruct BootROM to enter boot Xmodem boot mode, send \fIu-boot-with-spl.kwb\fP
 kwbimage file via Xmodem on \fI/dev/ttyUSB0\fP at 115200 Bd and run terminal
 program:
 .IP
-.B kwboot -b u-boot-spl.kwb -t /dev/ttyUSB0
+.B kwboot -b u-boot-with-spl.kwb -t /dev/ttyUSB0
 
 .PP
 Instruct BootROM to enter boot Xmodem boot mode, send header of
-\fIu-boot-spl.kwb\fP kwbimage file via Xmodem at 115200 Bd, then instruct
+\fIu-boot-with-spl.kwb\fP kwbimage file via Xmodem at 115200 Bd, then instruct
 BootROM to change baudrate to 5200000 Bd, send data part of the kwbimage
 file via Xmodem at high speed and finally run terminal program:
 .IP
-.B kwboot -b u-boot-spl.kwb -B 5200000 -t /dev/ttyUSB0
+.B kwboot -b u-boot-with-spl.kwb -B 5200000 -t /dev/ttyUSB0
 
 .PP
-Only send \fIu-boot-spl.kwb\fP kwbimage file via Xmodem on \fI/dev/ttyUSB0\fP
+Only send \fIu-boot-with-spl.kwb\fP kwbimage file via Xmodem on \fI/dev/ttyUSB0\fP
 at 115200 Bd:
 .IP
-.B kwboot -D u-boot-spl.kwb /dev/ttyUSB0
+.B kwboot -D u-boot-with-spl.kwb /dev/ttyUSB0
 
 .PP
 Instruct BootROM to enter console debug mode and run terminal program on