flashrom.8: carve out `csgpiol` into its own section

Documentation for `csgpiol` was put into the generic programmer options
section. Move it to its own section.

Change-Id: Ic7379331d36b3068eacde5a983b4ccb3afc56c51
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/57893
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/71430
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/flashrom.8.tmpl b/flashrom.8.tmpl
index 9ec4d77..9f4493c 100644
--- a/flashrom.8.tmpl
+++ b/flashrom.8.tmpl
@@ -771,9 +771,9 @@
 Flyswatter/Flyswatter 2.
 .sp
 An optional parameter specifies the controller
-type, channel/interface/port and GPIO-based chip select it should support. For that you have to use the
+type, channel/interface/port it should support. For that you have to use the
 .sp
-.B "  flashrom \-p ft2232_spi:type=model,port=interface,csgpiol=gpio"
+.B "  flashrom \-p ft2232_spi:type=model,port=interface"
 .sp
 syntax where
 .B model
@@ -784,10 +784,7 @@
 " or " google-servo-v2-legacy
 .B interface
 can be
-.BR A ", " B ", " C ", or " D
-and
-.B csgpiol
-can be a number between 0 and 3, denoting GPIOL0-GPIOL3 correspondingly.
+.BR A ", " B ", " C ", or " D .
 The default model is
 .B 4232H
 the default interface is
@@ -815,6 +812,14 @@
 .B "  flashrom \-p ft2232_spi:divisor=div"
 .sp
 syntax.
+.sp
+Using the parameter
+.B csgpiol
+an additional CS# pin can be chosen, where the value can be a number between 0 and 3, denoting GPIOL0-GPIOL3
+correspondingly. Example:
+.sp
+.B "  flashrom \-p ft2232_spi:csgpiol=3"
+.sp
 .SS
 .BR "serprog " programmer
 .IP