phyam335x.inc: configure sgx core for all boards
phyam335x.inc: configure sgx core for all boards

The sgx kernel modules are under GPL, so we include them in every image.
The libgles is available as binary only. We configure a PROVIDER, but
they will not be installed by default.

Signed-off-by: Stefan Müller-Klieser <a3e08e35e4a42be768e7d0e76ae1ba321c2a66dd@phytec.de>

PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec,PHYTEC-Messtechnik-GmbH/meta-phytec