Fix RPI GW poor RSSI on RFM69 (#1077)

[alexelite]

fix #1077 Use radio auto standby mode to get correct RSSI value.
Details #1077 (comment)

[piotrraczynski]

it seems that this PR was sitting here for a while and CI results are gone. Can we get the checks re-run?

[mfalkvidd]

Sorry for the delay. I have re-run the build. The butler complains about styling. The suggested patch is available at https://ci.mysensors.org/job/MySensors/job/MySensors/job/PR-1511/9/execution/node/4/ws/MySensors/restyling.patch
Contents:

diff --git a/hal/transport/RFM69/driver/new/RFM69_new.cpp b/hal/transport/RFM69/driver/new/RFM69_new.cpp
index e1620d4..ff06160 100644
--- a/hal/transport/RFM69/driver/new/RFM69_new.cpp
+++ b/hal/transport/RFM69/driver/new/RFM69_new.cpp
@@ -734,7 +734,7 @@ LOCAL void RFM69_setConfiguration(void)
 		{ RFM69_REG_PAYLOADLENGTH, RFM69_MAX_PACKET_LEN }, // in variable length mode: the max frame size, not used in TX
 		{ RFM69_REG_NODEADRS, RFM69_BROADCAST_ADDRESS },	// init
 		{ RFM69_REG_BROADCASTADRS, RFM69_BROADCAST_ADDRESS },
-		{ RFM69_REG_AUTOMODES , RFM69_AUTOMODES_ENTER_PAYLOADREADY | RFM69_AUTOMODES_EXIT_FIFOEMPTY | RFM69_AUTOMODES_INTERMEDIATE_STANDBY },
+		{ RFM69_REG_AUTOMODES, RFM69_AUTOMODES_ENTER_PAYLOADREADY | RFM69_AUTOMODES_EXIT_FIFOEMPTY | RFM69_AUTOMODES_INTERMEDIATE_STANDBY },
 		{ RFM69_REG_FIFOTHRESH, RFM69_FIFOTHRESH_TXSTART_FIFOTHRESH | (RFM69_HEADER_LEN - 1) },	// start transmitting when rfm69 header loaded, fifo level irq when header bytes received (irq asserted when n bytes exceeded)
 		{ RFM69_REG_PACKETCONFIG2, RFM69_PACKET2_RXRESTARTDELAY_2BITS | RFM69_PACKET2_AUTORXRESTART_OFF | RFM69_PACKET2_AES_OFF },
 		{ RFM69_REG_TESTDAGC, RFM69_DAGC_IMPROVED_LOWBETA0 }, // continuous DAGC mode, use 0x30 if afc offset == 0

Would you mind applying the patch (or remove the single white space manually) ? When that is done, we should be able to get a good build.