community/{motorola-harpia,samsung-{a{3,5}{,u}lte,serranovelte}}: enable screen in initfs

As of !2039 (merged), the kernel modules are now stripped (INSTALL_MOD_STRIP=1). It turns out that this massively reduces their size so that including the panel + touchscreen modules in the initfs still fits into the partition. This allows the splash screen and osk-sdl to work correctly.

Tested on motorola-harpia, samsung-a5ulte, samsung-serranovelte. samsung-a3(u)lte is just guessed but should be equivalent to samsung-serranovelte.

Cc: @Mis012 @TravMurav @srxl @minlexx