Add Android Serial GPS Driver

gps/Android.bp

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+// Copyright (C) 2011 The Android-x86 Open Source Project
+
+cc_library_shared {
+    name: "gps.default",
+    relative_install_path: "hw",
+    proprietary: true,
+    srcs: ["gps.c"],
+    include_dirs: [
+        "hardware/libhardware/include",
+        "system/core/libsystem/include",
+    ],
+    shared_libs: [
+        "libcutils",
+        "liblog",
+    ],
+    cflags: [
+        "-Wno-unused-parameter",
+        "-Wno-unused-variable",
+    ],
+}

gps/README.md

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+Android Serial GPS Driver
+
+How to use:
+
+To set serial port, add a property "ro.kernel.android.gps" and set it equal to your GPS device file.
+ie. ro.kernel.android.gps=ttyO1
+
+Default baud rate is 9600, to adjust add a property "ro.kernel.android.gpsttybaud" and set it equal to the needed rate. (4800-115200)
+ie. ro.kernel.android.gpsttybaud=9600
+
+Default GPS fix rate (interval between position updates) depends on the used device but it is often 1 second.  This rate is possible
+to modify by property "ro.kernel.android.gps.max_rate" if your GPS device is able to process UBX protocol. Acceptable property value
+must be from one of two ranges - from 1 to 65 seconds or from 250 to 65000 milliseconds.
+
+Serial GPS driver is able to synchronize system time by the similar way as Internet connection. Property
+"ro.kernel.android.gps.time_sync" which is greater than zero is taken as threshold in seconds. If difference between system time
+and GPS time will grow over given threshold then system time will be set to GPS time with the respect to the current time zone.
+Threshold should be set to some value from 20 to 60. If property is missing or its value is zero then time synchronization
+is turned off.
+
+Notes:
+* If using a USB device make sure you have the necessary kernel modules loaded or built in to the kernel.
+* Make sure the permissions on your device file are correct
+
+Donate:
+If you find any of this useful and want to show appreciation see below:
+
+PayPal: keith.conger@gmail.com
+Bitcoin: 1Pg54vVnaLxNsziA6cy9CTefoEG5iAm9Uh