Snippets for xdrv:fbdev 0.5.0 from Alpine riscv64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-riscv64/community/xf86-video-fbdev/xf86-video-fbdev-0.5.0-r6.log.

• fbdev.c:281:16: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    281 |         device = xf86FindOptionValue(devSection->options, "fbdev");
        |                ^
  

• fbdev.c:340:17: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    340 |             dev = xf86FindOptionValue(devSections[i]->options,"fbdev");
        |                 ^
  

• fbdev.c:463:26: warning: passing argument 3 of 'fbdevHWInit' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    463 |                          xf86FindOptionValue(fPtr->pEnt->device->options,
        |                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    464 |                                              "fbdev")))
        |                                              ~~~~~~~~