MIPS: lantiq: Set physical_memsize

MIPS: lantiq: Set physical_memsize

physical_memsize is needed by the vpe loader code and the platform
specific code has to define it. This value will be given to the
firmware loaded with the VPE loader. I am not aware of any standard
interface or better value to provide here.

Reported-by: kbuild test robot <[email protected]>
Fixes: d9ae4f18c0d2 ("MIPS: Lantiq: Activate more drivers in default configuration")
Signed-off-by: Hauke Mehrtens <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: John Crispin <[email protected]>
Cc: Paul Gortmaker <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/14908/
Signed-off-by: James Hogan <[email protected]>