meson: simplify dependencies

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

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Id97da97371cf4b8f526f0cc1ca4e4151c466fadf
diff --git a/subprojects/phosphor-logging.wrap b/subprojects/phosphor-logging.wrap
index 8db07b6..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
+url = https://github.com/openbmc/phosphor-logging.git
 revision = HEAD
+
+[provide]
+phosphor-logging = phosphor_logging_dep