Revert "cmake: rpi videocore needs brcmegl as well"

This reverts commit cd313811850c4f474ee5dec7bd1842e2cb4c2043.

Linking libbrcmEGL.so explicitly breaks (causes segmentation faults) in other code that links and runs the X11 EGL.

Reopens https://github.com/libsdl-org/SDL/issues/14749

At least in my Raspbian Stretch build environment, the vc_dispmanx symbols that were missing are found in libbcm_host.so, which is linked by default.

cmake/sdlchecks.cmake

@@ -1332,8 +1332,7 @@ macro(CheckRPI)
         set(HAVE_SDL_VIDEO TRUE)
         set(SDL_VIDEO_DRIVER_RPI 1)
         sdl_glob_sources("${SDL3_SOURCE_DIR}/src/video/raspberry/*.c")
-        sdl_link_dependency(rpi-video-bcm_host LIBS PkgConfig::PC_BCM_HOST PKG_CONFIG_PREFIX PC_BCM_HOST PKG_CONFIG_SPECS ${BCM_HOST_PKG_CONFIG_SPEC})
-        sdl_link_dependency(rpi-video-brcmegl LIBS PkgConfig::PC_BRCMEGL PKG_CONFIG_PREFIX PC_BRCMEGL PKG_CONFIG_SPECS ${BRCMEGL_PKG_CONFIG_SPEC})
+        sdl_link_dependency(rpi-video LIBS PkgConfig::PC_BCM_HOST PKG_CONFIG_PREFIX PC_BCM_HOST PKG_CONFIG_SPECS ${BCM_HOST_PKG_CONFIG_SPEC})
       endif()
     endif()
   endif()