Bluetooth: MGMT: Fix error report for ADD_EXT_ADV_PARAMS

Bluetooth: MGMT: Fix error report for ADD_EXT_ADV_PARAMS

[ Upstream commit 3b1c7c00b8c22b3cb79532252c59eb0b287bb86d ]

When validating the parameter length for MGMT_OP_ADD_EXT_ADV_PARAMS
command, use the correct op code in error status report:
was MGMT_OP_ADD_ADVERTISING, changed to MGMT_OP_ADD_EXT_ADV_PARAMS.

Fixes: 12410572833a2 ("Bluetooth: Break add adv into two mgmt commands")
Signed-off-by: Inga Stotland <inga.stotland@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>