gpsd: initial add to packages

This package is currently in oldpackages. Add here to keep support for gpsd.

From oldpackages, this was bumped from 3.10 -> 3.15 and includes an upstream
patch to allow building with musl.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>

utils/gpsd/files/gpsd.config

@@ -0,0 +1,5 @@
+config gpsd core
+    option device    "/dev/ttyUSB0"
+    option port    "2947"
+    option listen_globally    "false"
+    option enabled    "true"