hwdb: add Infinix Y3 Max YL-613 keys

hwdb: add Infinix Y3 Max YL-613 keys

Map the Power Boost key (top-right corner, scancode 0x64) to KEY_PROG1.
Map the Touchpad Toggle key (Fn+F8, scancode 0x76) to KEY_F21.

Verified working via evtest:

Event: type 4 (EV_MSC), code 4 (MSC_SCAN), value 64
Event: type 1 (EV_KEY), code 148 (KEY_PROG1), value 1

Event: type 4 (EV_MSC), code 4 (MSC_SCAN), value 76
Event: type 1 (EV_KEY), code 206 (KEY_F21), value 1

DMI: svnInfinix:*pnY3Max:*
AT keyboard scancodes: 0x64, 0x76 (set 2)