make SPI LORA pins configurable in hal-files

lib/arduino-lmic-master/doc/README.txt

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+DISCLAIMER:
+Please note that the software is provided AS IS and we cannot
+provide support for optimizations, adaptations, integration,
+ports to other platforms or device drivers!

lib/arduino-lmic-master/doc/release-notes.txt

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+==============================================================================
+LMIC VERSION 1.6  (13-July-2015)
+---------------------------------
+
+ - License changed to BSD
+ - Modem included, see LMiC-Modem.pdf and examples/modem
+ - Additional stm32 hardware and Blipper board specific peripheral code 
+ 
+
+==============================================================================
+LMIC VERSION 1.5  (8-May-2015)
+------------------------------
+
+ - fixed condition in convFreq()
+
+ - fixed freq*100 bug and freq==0 bug for CFList
+
+ - fixed TX scheduling bug
+
+ - better support for GNU compiler toolchain
+
+
+==============================================================================
+LMIC VERSION 1.4  (17-Mar-2015)
+-------------------------------
+
+ - changed API: inverted port indicator flag in LMIC.txrxFlags
+   (now TXRX_PORT, previously TXRX_NOPORT)
+
+ - fixed offset OFF_CFLIST constant
+
+ - changed CRC-16 algorithm for beacons to CCITT(XMODEM) polynomial
+
+ - fixed radio driver (low data rate optimization for SF11+SF12 only for BW125)
+
+ - fixed timer rollover handling in job queue
+
+==============================================================================