* Makes the OLED driver used by the helix:five_rows keymap switchable.
* use TOP/drivers/oled/oled_driver.c
`make HELIX=stdole helix:five_rows`
* use helix/local_drivers/ssd1306.c
`make HELIX=oled helix:five_rows`
* Separated the OLED related code from keymap.c and moved it to oled_display.c.
* scan rate without OLED
* make HELIX=verbose,dispoff,scan helix/rev2:five_rows
use Helix original code
text data bss dec hex filename
18880 58 235 19173 4ae5 .build/helix_rev2_five_rows.elf
matrix scan frequency: 1590
* make HELIX=verbose,dispoff,scan,sc helix/rev2:five_rows
use split_common code
text data bss dec hex filename
18554 40 231 18825 4989 .build/helix_rev2_five_rows.elf
matrix scan frequency: 1202
* scan rate with helix/local_drivers/ssd1306.c
* make HELIX=verbose,dispoff,scan,oled helix/rev2:five_rows
use Helix original code
text data bss dec hex filename
24048 196 342 24586 600a .build/helix_rev2_five_rows.elf
matrix scan frequency: 739
* make HELIX=verbose,dispoff,scan,sc,oled helix/rev2:five_rows
use split_common code
text data bss dec hex filename
23750 176 338 24264 5ec8 .build/helix_rev2_five_rows.elf
matrix scan frequency: 642
* scan rate with drivers/oled/oled_driver.c
* make HELIX=verbose,dispoff,scan,stdole helix/rev2:five_rows
use Helix original code
text data bss dec hex filename
24590 210 798 25598 63fe .build/helix_rev2_five_rows.elf
matrix scan frequency: 293
* make HELIX=verbose,dispoff,scan,sc,stdole helix/rev2:five_rows
use split_common code
text data bss dec hex filename
24290 190 794 25274 62ba .build/helix_rev2_five_rows.elf
matrix scan frequency: 277
* clean up helix/rev2/keymaps/five_rows/keymap.c
* update five_rows/oled_display.c
* update helix/rev2/keymaps/five_rows/keymap.c: remove LAYOUT_kc()
* Ported the keymap from helix/rev2:five_rows to helix/rev3_5rows:five_rows.
* update five_rows/oled_display.c
* add License comment
e6a13e0b1c