staging: bcm2835-camera: fix module autoloading

staging: bcm2835-camera: fix module autoloading

BugLink: https://bugs.launchpad.net/bugs/1863019
[ Upstream commit 3a2c20024a2b47adbf514e7f3ab79342739c3926 ]

In order to make the module bcm2835-camera load automatically, we need to
add a module alias.

Fixes: 4bebb0312ea9 ("staging/bcm2835-camera: Set ourselves up as a platform driver.")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>