net/cnxk: get flow operations

net/cnxk: get flow operations

This patch adds flow ops get operation to enable rte_flow_ops.A

This patch also add support for flow dev dump API.
Every flow rule added will be dumped in the below format.

MCAM Index:1881
Interface :NIX-RX (0)
Priority  :1
NPC RX Action:0X00000000404001
	ActionOp:NIX_RX_ACTIONOP_UCAST (1)
	PF_FUNC: 0X400
	RQ Index:0X004
	Match Id:0000
	Flow Key Alg:0
NPC RX VTAG Action:0X00000000008100
	VTAG0:relptr:0
	lid:0X1
	type:0
Patterns:
	NPC_PARSE_NIBBLE_CHAN:000
	NPC_PARSE_NIBBLE_LA_LTYPE:LA_ETHER
	NPC_PARSE_NIBBLE_LB_LTYPE:NONE
	NPC_PARSE_NIBBLE_LC_LTYPE:LC_IP
	NPC_PARSE_NIBBLE_LD_LTYPE:LD_TCP
	NPC_PARSE_NIBBLE_LE_LTYPE:NONE
	LA_ETHER, hdr offset:0, len:0X6, key offset:0X8,\
		Data:0X4AE124FC7FFF, Mask:0XFFFFFFFFFFFF
	LA_ETHER, hdr offset:0XC, len:0X2, key offset:0X4, Data:0XCA5A,\
		Mask:0XFFFF
	LC_IP, hdr offset:0XC, len:0X8, key offset:0X10,\
		Data:0X0A01010300000000, Mask:0XFFFFFFFF00000000
	LD_TCP, hdr offset:0, len:0X4, key offset:0X18, Data:0X03450000,\
		Mask:0XFFFF0000
MCAM Raw Data :
	DW0     :0000CA5A01202000
	DW0_Mask:0000FFFF0FF0F000
	DW1     :00004AE124FC7FFF
	DW1_Mask:0000FFFFFFFFFFFF
	DW2     :0A01010300000000
	DW2_Mask:FFFFFFFF00000000
	DW3     :0000000003450000
	DW3_Mask:00000000FFFF0000
	DW4     :0000000000000000
	DW4_Mask:0000000000000000
	DW5     :0000000000000000
	DW5_Mask:0000000000000000
	DW6     :0000000000000000
	DW6_Mask:0000000000000000

Signed-off-by: Satheesh Paul <psatheesh@marvell.com>
Reviewed-by: Kiran Kumar K <kirankumark@marvell.com>