update .gitignore

hc

2024-03-26 e9199a72d842cbda78ac614eee5db7cdaa6f2530

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E2220-1170 BOARD
M:    Tom Warren <twarren@nvidia.com>
S:    Maintained
F:    board/nvidia/e2220-1170/
F:    include/configs/e2220-1170.h
F:    configs/e2220-1170_defconfig