ice: Fix multiple static analyser warnings

This patch fixes the following smatch errors:

1) Fix "odd binop '0x0 & 0xc'" when performing the bitwise-and with a
   constant value of zero (ICE_AQC_GSET_RSS_LUT_TABLE_SIZE_128_FLAG).
   Remove a similar bitwise-and with 0 in ice_add_marker_act() and use the
   right mask ICE_LG_ACT_GENERIC_OFFSET_M in the expression.

2) Fix a similar issue "odd binop '0x0 & 0x1800' in ice_req_irq_msix_misc.

3) Fix "odd binop '0x380000 & 0x7fff8'" in ice_add_marker_act(). Also, use
   a new define ICE_LG_ACT_GENERIC_OFF_RX_DESC_PROF_IDX instead of magic
   number '7'.

4) Fix warn: odd binop '0x0 & 0x18' in ice_set_dflt_vsi_ctx() by removing
   unnecessary logic to explicitly unset bits 3 and 4 in port_vlan_bits.
   These bits are unset already by the memset on ctxt->info.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>