MIPS: generic: remove unnecessary of_platform_populate call

MIPS: generic: remove unnecessary of_platform_populate call

The DT core will call of_platform_populate, so it is not necessary for
arch specific code to call it unless there are custom match entries,
auxdata or parent device. Neither of those apply here, so remove the call.

Cc: Paul Burton <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: James Hogan <[email protected]>
Cc: [email protected]
Signed-off-by: Rob Herring <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/19591/
Signed-off-by: Paul Burton <[email protected]>
Cc: [email protected]