nokia-rm885: add dev_touchscreen & weston_pixman_type

aports/device/device-nokia-rm885/APKBUILD

@@ -19,4 +19,4 @@ package() {
 	devicepkg_package $startdir $pkgname
 }
 
-sha512sums="731f3a6be1fec2f141ebe254f02edb404c053b2021da07be414582f95218ca05f934e8a37615cf4ec8139007fc37c1f8c578a21e7f49e76fbf16bf6869e0a0d3  deviceinfo"
+sha512sums="afe2ddb1ba717e4ecd680ec21c90f1abc5f8d0d5e8b3423979612cb1e5a81eb6300653963a5f688516a09901e6361c81e1a9fae83d1694c2f57fe6f826ad7ee7  deviceinfo"

aports/device/device-nokia-rm885/deviceinfo

@@ -14,7 +14,7 @@ deviceinfo_keyboard="false"
 deviceinfo_external_storage="true"
 deviceinfo_screen_width="480"
 deviceinfo_screen_height="800"
-deviceinfo_dev_touchscreen=""
+deviceinfo_dev_touchscreen="/dev/input/event0"
 deviceinfo_dev_touchscreen_calibration=""
 deviceinfo_dev_keyboard=""
 
@@ -29,3 +29,6 @@ deviceinfo_flash_offset_ramdisk="0x02000000"
 deviceinfo_flash_offset_second="0x00f00000"
 deviceinfo_flash_offset_tags="0x00000100"
 deviceinfo_flash_pagesize="4096"
+
+# Weston
+deviceinfo_weston_pixman_type="2"