hwc: Bump up version to 1.3

Increment hwc version to 1.3.
Create and use a converter from float source crop to integers.

Change-Id: I5e185195c975b3a9434c5d9dce9ae4757ff98739
(cherry picked from commit 7e5637c850bcdbe21784ca3bfa9668870306adff)
diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index fb23470..b6952d3 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -842,7 +842,7 @@
 
         //Setup HWC methods
         dev->device.common.tag          = HARDWARE_DEVICE_TAG;
-        dev->device.common.version      = HWC_DEVICE_API_VERSION_1_2;
+        dev->device.common.version      = HWC_DEVICE_API_VERSION_1_3;
         dev->device.common.module       = const_cast<hw_module_t*>(module);
         dev->device.common.close        = hwc_device_close;
         dev->device.prepare             = hwc_prepare;