meson: simplify dependencies

Leverage wrapfile `[provide]` directives to simplify the dependency
searching in the meson.build.

Change-Id: I7b37d6b9a0aa7b4a5df6f5a2bf28156b4043fc9a
diff --git a/meson.build b/meson.build
index 2c44f72..3209a1f 100644
--- a/meson.build
+++ b/meson.build
@@ -25,21 +25,9 @@
   configuration: conf_data
 )
 
-sdbusplus = dependency(
-    'sdbusplus',
-    fallback: ['sdbusplus', 'sdbusplus_dep']
-)
-
-phosphor_logging = dependency(
-    'phosphor-logging',
-    fallback: [
-        'phosphor-logging',
-        'phosphor_logging_dep'])
-
-phosphor_dbus_interfaces = dependency(
-  'phosphor-dbus-interfaces',
-  fallback: ['phosphor-dbus-interfaces', 'phosphor_dbus_interfaces_dep']
-)
+sdbusplus = dependency('sdbusplus')
+phosphor_logging = dependency('phosphor-logging')
+phosphor_dbus_interfaces = dependency('phosphor-dbus-interfaces')
 
 cxx = meson.get_compiler('cpp')
 cereal_dep = dependency('cereal', required: false)
diff --git a/subprojects/phosphor-dbus-interfaces.wrap b/subprojects/phosphor-dbus-interfaces.wrap
index 935a8b2..346aa0c 100644
--- a/subprojects/phosphor-dbus-interfaces.wrap
+++ b/subprojects/phosphor-dbus-interfaces.wrap
@@ -1,3 +1,6 @@
 [wrap-git]
 url = https://github.com/openbmc/phosphor-dbus-interfaces.git
 revision = HEAD
+
+[provide]
+phosphor-dbus-interfaces = phosphor_dbus_interfaces_dep
diff --git a/subprojects/phosphor-logging.wrap b/subprojects/phosphor-logging.wrap
index a039fcf..71eee8b 100644
--- a/subprojects/phosphor-logging.wrap
+++ b/subprojects/phosphor-logging.wrap
@@ -1,3 +1,6 @@
 [wrap-git]
 url = https://github.com/openbmc/phosphor-logging.git
 revision = HEAD
+
+[provide]
+phosphor-logging = phosphor_logging_dep
diff --git a/subprojects/sdbusplus.wrap b/subprojects/sdbusplus.wrap
index d470130..edd9a31 100644
--- a/subprojects/sdbusplus.wrap
+++ b/subprojects/sdbusplus.wrap
@@ -1,3 +1,7 @@
 [wrap-git]
 url = https://github.com/openbmc/sdbusplus.git
 revision = HEAD
+
+[provide]
+sdbusplus = sdbusplus_dep
+program_names = sdbus++, sdbus++-gen-meson