ARM: bcm2835_defconfig: Switch to SimpleDRM

fbdev is consider deprecated, so switch to DRM_SIMPLEDRM which works
as a drop-in replacement for FB_SIMPLE.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/20230113205842.17051-2-stefan.wahren@i2se.com


Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>