common/sfc_efx/base: improve MCDI version/boot clarity
common/sfc_efx/base: improve MCDI version/boot clarity

Improve the clarity of the code.

Fixes: 833cfcd590e2 ("common/sfc_efx/base: add API for querying board info")
Fixes: 312191e86eb0 ("common/sfc_efx/base: refactor version / boot info get helper")

Signed-off-by: Ivan Malov <436a2feb05eb79a6862681e66bd0193220e8fb2d@oktetlabs.ru>
Acked-by: Andrew Rybchenko <4155e7bf8e0185127625dac6d84336299844982f@oktetlabs.ru>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk