[coreboot] [PATCH] YABEL debug flags

[Myles Watson]

Since we already have CONFIG_YABEL_DEBUG_FLAGS, there doesn't seem to be a
need for another config variable.

This patch:
1. Changes CONFIG_DEBUG to DEBUG in util/x86emu/*
2. Makes DEBUG depend on CONFIG_YABEL_DEBUG_FLAGS being nonzero

Boot tested with CONFIG_YABEL_DEBUG_FLAGS 0 and nonzero.

Signed-off-by: Myles Watson

Thanks,
Myles