fix: serdes: a38x,a39x: Fix PCIex4 topology verification (JIRA SYSTEMSW-1657).

	-PCIex4 topology verification detected valid topology
	 as invalid since:
		 the serdes type was not set PEX0
	  	 PCIeX4 lane count init value was wrong
	- fix the PCIex4 serdes type in topology configurations
	- fix PCIeX4 lane count init value

Change-Id: I831cb85319b445f61cef39d45c0b4ee1d47cf1c9
Signed-off-by: Margarita Granov <margra@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/17545
Reviewed-by: Omri Itach <omrii@marvell.com>
Tested-by: Omri Itach <omrii@marvell.com>
5 files changed