RFR: 8157224: isNPOTSupported check is too strict

[Jose Pereda]

This PR enables support for 3D on iOS devices, as they use OpenGL ES 2.0, which has (limited) support for npot support.

-------------

Commits:
 - 1bef8cf6: Enable 3D support on iOS

Changes: https://git.openjdk.java.net/jfx/pull/92/files
 Webrev: https://webrevs.openjdk.java.net/jfx/92/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8157224
  Stats: 7 lines in 1 file changed: 5 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/92.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/92/head:pull/92

PR: https://git.openjdk.java.net/jfx/pull/92