Android 4.4.2 doesn't define HWC_DEVICE_API_VERSION_0_* anymore so #ifdef out that code

Signed-off-by: David Greaves <david@dgreaves.com>
Merge pull request #17 from lbt/master

Android 4.4.2 doesn't define HWC_DEVICE_API_VERSION_0_* anymore so #ifde...
[eglfs] Set swapInterval at the right time

The swapInterval applies to the current context and cannot be set
before.