Change in coreboot[master]: arch/x86: Skip returning default leaf value as `0`

[Subrata Banik (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Subrata Banik, Kyösti Mälkki.
Hello build bot (Jenkins), Furquan Shaikh, Paul Menzel, Tim Wawrzynczak, Kyösti Mälkki, Swift Geek (Sebastian Grzywna),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/57305

to look at the new patch set (#2).

Change subject: arch/x86: Skip returning default leaf value as `0`
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arch/x86: Skip returning default leaf value as `0`

`cpu_get_cache_info_leaf()` function is responsible to report leaf
value for CPU that have support for deterministic cache cpuid. As per
available datasheets from AMD and Intel the supported CPUID leaf are
0x8000_001d for AMD and 0x04 for Intel. Hence, this CL skips returning
default leaf value as `0`.

TEST=Able to fix the hang issue seen on ASRock E350M1 with commit hash
e2b5fee

Change-Id: Iee33b39298e7821ac5280d998172b58a70c8715b
Signed-off-by: Subrata Banik 
---
M src/arch/x86/cpu_common.c
1 file changed, 2 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/05/57305/2