bug #322 - ttgo lora32 deep sleep

oh - I think I found the problem (probably)!  we were isolating gpio12 (which isn't used on other boards) to save power during sleep.  gpio12 is the button for this board. @thomslik would you mind pulling this commit and seeing if it works better?

src/configuration.h

@@ -309,6 +309,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define BUTTON_PIN                                                                                                               \
     12 // If defined, this will be used for user button presses, if your board doesn't have a physical switch, you can wire one
        // between this pin and ground
+#define BUTTON_NEED_PULLUP
 
 #define USE_RF95
 #define LORA_DIO0 26 // a No connect on the SX1262 module

src/sleep.cpp

@@ -197,7 +197,7 @@ void doDeepSleep(uint64_t msecToWake)
     static const uint8_t rtcGpios[] = {/* 0, */ 2,
     /* 4, */
 #ifndef USE_JTAG
-                                       12,           13,
+                                       13,
     /* 14, */ /* 15, */
 #endif
                                        /* 25, */ 26, /* 27, */