Use hardware.inc 5.0 constants

[Rangi42]

Right from the very beginning with Hello World, the tutorial uses constants from hardware.inc. Version 5.0, released 2025-06-22, changed the naming convention for bit number and mask constants, and also added a number of new constants for more hardware-related quantities that are currently hard-coded in the tutorial.

A few of the examples in Hello World:

• ld a, LCDCF_ON | LCDCF_BGON would now be ld a, LCDC_ON | LCDC_BG_ON ... and could explicitly specify more of the flag bits, like LCDC_BG_9800
• WaitVBlank: ld a, [rLY] :: cp 144 :: jp c, WaitVBlank can use LY_VBLANK for 144
• ld hl, $9800 can be ld hl, TILEMAP0

And some of the ones in Unbricked:

• ld b, 160 :: ld hl, _OAMRAM would now be ld b, OAM_SIZE :: ld hl, STARTOF(OAM)
• ld a, 128 + 16 and ld a, 16 + 8 would now be ld a, 128 + OAM_Y_OFS and ld a, 16 + OAM_X_OFS
• ld a, P1F_GET_BTN would now be ld a, JOYP_GET_BUTTONS (and [rP1] would be [rJOYP])
• [_OAMRAM + 5] could be [STARTOF(OAM) + 1 * OBJ_SIZE + OAMA_X] (i.e. the X coord of OBJ 1)
• etc