rtl8188eu: Fix smatch warnings in hal/HalPhyRf_8188e.c

Smatch reports the following:
  CHECK   /home/finger/rtl8188eu/hal/HalPhyRf_8188e.c
/home/finger/rtl8188eu/hal/HalPhyRf_8188e.c:1878 PHY_APCalibrate_8188E() info: ignoring unreachable code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
rtl8188eu: Fix smatch warning in core/rtw_wlan_util.c

Smatch shows the following:
  CHECK   /home/finger/rtl8188eu/core/rtw_wlan_util.c
/home/finger/rtl8188eu/core/rtw_wlan_util.c:1111 rtw_check_bcn_info() info: ignoring unreachable code.

This case had the _func_exit_ macro after a return.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
rtl8188eu: Fix smatch warning in core/rtw_xmit.c

Smatch displays the following:
  CHECK   /home/finger/rtl8188eu/core/rtw_xmit.c
/home/finger/rtl8188eu/core/rtw_xmit.c:1571 dequeue_one_xmitframe() info: ignoring unreachable code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
rtl8188eu: Fix smatch warnings in hal/rtl8188e_hal_init.c

Smatch displays the following:
  CHECK   /home/finger/rtl8188eu/hal/rtl8188e_hal_init.c
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:1695 hal_EfusePgPacketWriteData() info: ignoring unreachable code.
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2269 Hal_ReadPowerValueFromPROM_8188E() error: buffer overflow 'pwrInfo24G->IndexBW40_Base[rfPath]' 5 <= 5
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2466 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_CCK_Base[rfPath]' 14 <= 14
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2468 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_BW40_Base[rfPath]' 14 <= 14
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2474 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_CCK_Base[rfPath]' 14 <= 14
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2475 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_BW40_Base[rfPath]' 14 <= 14

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
rtl8188eu: Fix smatch warnings in hal/rtl8188e_hal_init.c, part 2

Smatch displays the following:
  CHECK   /home/finger/rtl8188eu/hal/rtl8188e_hal_init.c
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:1695 hal_EfusePgPacketWriteData() info: ignoring unreachable code.
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2269 Hal_ReadPowerValueFromPROM_8188E() error: buffer overflow 'pwrInfo24G->IndexBW40_Base[rfPath]' 5 <= 5
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2466 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_CCK_Base[rfPath]' 14 <= 14
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2468 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_BW40_Base[rfPath]' 14 <= 14
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2474 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_CCK_Base[rfPath]' 14 <= 14
/home/finger/rtl8188eu/hal/rtl8188e_hal_init.c:2475 Hal_ReadTxPowerInfo88E() error: buffer overflow 'pHalData->Index24G_BW40_Base[rfPath]' 14 <= 14

An editing error split this patch into two parts.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Move vars from rtw_recv.h to rtw_recv.c in order to prevent unused vars warnings when including rtw_recv.h.
Note that SNAP_ETH_TYPE_APPLETALK_DDP, SNAP_ETH_TYPE_TDLS, SNAP_HDR_APPLETALK_DDP, oui_8021h and oui_rfc1042 are still unused and can be commented out.
Merge branch 'next' of https://github.com/Noltari/rtl8188eu
rtl8188eu: Remove unused static data defines from core/rtw_recv.c

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>