ld/
    * emulparams/arclinux.sh: Define COMMONPAGESIZE as 8k which
    enables generation of DATA_SEGMENT_ALIGN in linker scripts.
    * emulparams/arclinux_prof.sh: likewise
    * emulparams/arceblinux.sh: likewise
    * emulparams/arceblinux_prof.sh: likewise

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>