Add systemd units for new phosphor-multi-gpio-monitor

Also added sample phosphor-multi-gpio-monitor.json for
configuration of list of GPIO to be monitored. Platform
specific file can be added through bbappend file.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Change-Id: I3a2fac155be4583aeee52f018da6be0b506633fd
diff --git a/meson.build b/meson.build
index 0f94b29..b5e6529 100644
--- a/meson.build
+++ b/meson.build
@@ -39,12 +39,28 @@
 
 configure_file(
     copy: true,
+    input: 'phosphor-multi-gpio-monitor.service',
+    install: true,
+    install_dir: systemd_system_unit_dir,
+    output: 'phosphor-multi-gpio-monitor.service'
+)
+
+configure_file(
+    copy: true,
     input: 'phosphor-gpio-presence@.service',
     install: true,
     install_dir: systemd_system_unit_dir,
     output: 'phosphor-gpio-presence@.service'
 )
 
+configure_file(
+    copy: true,
+    input: 'phosphor-multi-gpio-monitor.json',
+    install: true,
+    install_dir: '/usr/share/phosphor-gpio-monitor',
+    output: 'phosphor-multi-gpio-monitor.json'
+)
+
 libevdev_o = static_library(
     'libevdev_o',
     'evdev.cpp',