Change in coreboot[master]: helpers: Add GENMASK and GENMASK_ULL macros

[Yu-Ping Wu (Code Review)]

Attention is currently required from: Yu-Ping Wu.
Hello Hung-Te Lin, build bot (Jenkins), Jakub Czapiga,

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

https://review.coreboot.org/c/coreboot/+/56543

to look at the new patch set (#5).

Change subject: helpers: Add GENMASK and GENMASK_ULL macros
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helpers: Add GENMASK and GENMASK_ULL macros

The GENMASK is defined in multiple files (with various names such as
MASKBIT), which sets certain consecutive bits to 1 and leaves the others
to 0. To avoid duplicate macros, add GENMASK and GENMASK_ULL macros to
helpers.h, for unsigned long and unsigned long long types, respectively.

GENMASK(h, l) sets bits from `h` to `l` (inclusive) to 1. For example,
GENMASK_ULL(39, 21) gives us the 64-bit vector 0x000000ffffe00000.

Remove duplicate macro definitions. Also utilize GENMASK for _BF_MASK in
mmio.h.

BUG=none
TEST=make tests/commonlib/bsd/helpers-test
TEST=emerge-cherry coreboot
BRANCH=none

Change-Id: If2e7c4827d8a7d27688534593b556a72f16f0c2b
Signed-off-by: Yu-Ping Wu 
---
M src/commonlib/bsd/include/commonlib/bsd/helpers.h
M src/include/device/mmio.h
M src/soc/mediatek/common/pll.c
M src/soc/mediatek/mt8195/dptx_hal.c
M src/soc/mediatek/mt8195/include/soc/dptx_hal.h
M src/soc/qualcomm/sc7180/include/soc/qcom_qup_se.h
M tests/commonlib/bsd/helpers-test.c
7 files changed, 42 insertions(+), 19 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/43/56543/5