fix(qemu): allocate space for GPT bitlock

Since commit ec0088bbab93 ("feat(gpt): add support for large GPT
mappings"), the platform needs to reserve space for the bitlock,
immediately after the L0 GPT table. Add two pages to the L0 GPT reserve.
This could be optimized later by moving the bitlock somewhere else,
because it really only needs (1 << PPS.T) / (512M * 8) = 256 bytes for
the QEMU virt platform.

Fix two more comments in qemu_pas_def.h since we're here.

Change-Id: I2b0b8de38f4b5058735ed16f1cdc50e6b2d52ad9
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
3 files changed