[XS] Change in coreboot[main]: mb/dell/optiplex_9020: Fix UB in package power calculation

[Máté Kukri (Code Review)]

Attention is currently required from: Máté Kukri.

Hello Angel Pons, Elyes Haouas, Nico Huber, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/83736?usp=email

to look at the new patch set (#3).

Change subject: mb/dell/optiplex_9020: Fix UB in package power calculation
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mb/dell/optiplex_9020: Fix UB in package power calculation

Fix potential undefined behaviour in the `get_pkg_power()` function:
- If `rapl_power_unit == 0`, `pkg_power_info / rapl_power_unit` is
  invalid
- If `rapl_power_unit > 7`, the result of the shift doesn't fit into a
  `uint8_t`

Signed-off-by: Mate Kukri 
Change-Id: I48ef59c4fbeb0a55675ac24da31e6e0b194cb58d
---
M src/mainboard/dell/optiplex_9020/mainboard.c
1 file changed, 3 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/36/83736/3