Merge patch series "bios_emulator: Fix two issues found by Smatch"

Andrew Goodbody <andrew.goodbody@linaro.org> says:

Smatch found two issues in bios_emulator, a buffer overflow and missing
parens for a macro. Fix them both.

Link: https://lore.kernel.org/r/20250723-bios_emulator-v1-0-78b9ef7b9b4a@linaro.org