qed: Initialize debug string array

Coverity complains of an uninitialized variable.

CID 120847 (#1 of 1): Uninitialized scalar variable (UNINIT)
3. uninit_use_in_call: Using uninitialized value *sw_platform_str when calling qed_dump_str_param. [show details]
1344        offset += qed_dump_str_param(dump_buf + offset,
1345                                     dump, "sw-platform", sw_platform_str);

Fix this by removing dead code that references sw_platform_str.

Fixes: 6c95dd8f ("qed: Update debug related changes")

Cc: Ariel Elior <aelior@marvell.com>
Cc: GR-everest-linux-l2@marvell.com
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Shai Malin <smalin@marvell.com>
Cc: Omkar Kulkarni <okulkarni@marvell.com>
Cc: Prabhakar Kushwaha <pkushwaha@marvell.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org (open list)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_debug.c

@@ -1315,7 +1315,6 @@ static u32 qed_dump_common_global_params(struct qed_hwfn *p_hwfn,
 					 u8 num_specific_global_params)
 {
 	struct dbg_tools_data *dev_data = &p_hwfn->dbg_info;
-	char sw_platform_str[MAX_SW_PLTAFORM_STR_SIZE];
 	u32 offset = 0;
 	u8 num_params;
 
@@ -1341,8 +1340,6 @@ static u32 qed_dump_common_global_params(struct qed_hwfn *p_hwfn,
 				     dump,
 				     "platform",
 				     s_hw_type_defs[dev_data->hw_type].name);
-	offset += qed_dump_str_param(dump_buf + offset,
-				     dump, "sw-platform", sw_platform_str);
 	offset += qed_dump_num_param(dump_buf + offset,
 				     dump, "pci-func", p_hwfn->abs_pf_id);
 	offset += qed_dump_num_param(dump_buf + offset,