[libgpiod][PATCH] README: add --enable-bindings-glib as required argument to build D-Bus

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

GLib bindings to libgpiod are required to build D-Bus and both
--enable-dbus and --enable-bindings-glib options must be passed to
configure so make it clear in the README.

Suggested-by: Douglas Silva <doug.hs@proton.me>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 README | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/README b/README
index 80ad939..e325f5f 100644
--- a/README
+++ b/README
@@ -241,10 +241,11 @@ majority of the GPIO chardev's functionality and implement it from both the
 server and client sides in the form of the gpio-manager daemon and the gpiocli
 command-line utility for talking to the manager.
 
-DBus support can be built by passing --enable-dbus to configure. The daemon
-is bundled with a systemd unit file and an example configuration file for the
-io.gpiod1 interface that allows all users to access basic information about the
-GPIOs in the system but only root to request lines or change their values.
+DBus support can be built by passing --enable-dbus and --enable-bindings-glib
+to configure. The daemon is bundled with a systemd unit file and an example
+configuration file for the io.gpiod1 interface that allows all users to access
+basic information about the GPIOs in the system but only root to request lines
+or change their values.
 
 With the manager running the user can run gpiocli to control GPIOs by asking
 gpio-manager to act on their behalf:
-- 
2.43.0