Fix Section Mismatch

WARNING: vmlinux.o(.text+0x4c578c): Section mismatch in reference from the function ram_console_driver_probe() to the (unknown reference) .init.data:(unknown)
The function ram_console_driver_probe() references
the (unknown reference) __initdata (unknown).
This is often because ram_console_driver_probe lacks a __initdata
annotation or the annotation of (unknown) is wrong.