[OE-core] [PATCH] qemu script: explicitly set 32 bit depth for x86-64

From: Alexandru DAMIAN This patch is the same as 6c22c591374d258228f74814cded34a24b4bf2d3, but for x86-64 targets which exhibit the same problem. Qemu update from 1.2 to 1.4 now allows for 16bit depth in guests, whereby previously only 32bit depth was supported. However, the new support is broke

[OE-core] [PATCH] qemu script: explicitly set 32 bit depth

From: Alexandru DAMIAN Qemu update from 1.2 to 1.4 now allows for 16bit depth in guests, whereby previously only 32bit depth was supported. However, the new support is broken, so we force 32bit depth in all cases. MUST_REVERT: on qemu update, if 16bit depth support is working ok Fixes [YOCTO #3