Revert "gpio_matrix.c: Remove Duplicate define"

This reverts commit 007a5fb2a8b1a1948066496788691e2ac1ecee79.
Revert "gpio_matrix: doubleshot keyboard matrix debounce issue workaround"

This reverts commit 088b659fe8c7a3aace4c74877c203d7a9060d9a1.