Move reverse_bits*() to separate source file

reversing bits is not NR specific. Think of it like this: LTE code might
use reverse_bits*() as well, but in the old location, it would pull in a
bunch of NR dependencies that are superfluous.

openair1/PHY/CODING/nrLDPC_coding/nrLDPC_coding_aal/nrLDPC_coding_aal.c

@@ -5,6 +5,7 @@
 #include "../nrLDPC_coding_interface.h"
 #include "nrLDPC_coding_aal.h"
 #include "PHY/sse_intrin.h"
+#include "reverse_bits.h"
 #include <common/utils/LOG/log.h>
 #define NR_LDPC_ENABLE_PARITY_CHECK
 

openair1/PHY/CODING/nrPolar_tools/nr_polar_procedures.c

@@ -30,8 +30,8 @@
  * \warning
  */
 
-#include "common/utils/nr/nr_common.h"
 #include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
+#include "reverse_bits.h"
 #include <assert.h>
 #include <stdlib.h>
 #include <stdint.h>

openair1/PHY/NR_TRANSPORT/nr_pbch.c

@@ -35,6 +35,7 @@
 #include "PHY/NR_TRANSPORT/nr_transport_proto.h"
 #include "PHY/sse_intrin.h"
 #include "executables/softmodem-common.h"
+#include "reverse_bits.h"
 #include "openair1/PHY/NR_REFSIG/nr_refsig_common.h"
 #include "openair1/PHY/NR_REFSIG/nr_mod_table.h"
 #include "openair1/PHY/TOOLS/tools_defs.h"

openair1/PHY/NR_TRANSPORT/pucch_rx.c

@@ -50,6 +50,7 @@
 #include "nfapi/oai_integration/vendor_ext.h"
 #include "nfapi/oai_integration/vendor_ext.h"
 #include "SCHED_NR/sched_nr.h"
+#include "reverse_bits.h"
 
 #include "T.h"
 #include "nr_phy_common.h"

openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c

@@ -38,6 +38,7 @@
 #include <openair1/PHY/TOOLS/phy_scope_interface.h>
 #include "openair1/PHY/NR_REFSIG/nr_refsig_common.h"
 #include "PHY/nr_phy_common/inc/nr_phy_common.h"
+#include "reverse_bits.h"
 #include "instrumentation.h"
 //#define DEBUG_PBCH
 //#define DEBUG_PBCH_ENCODING

openair1/PHY/NR_UE_TRANSPORT/pucch_nr.c

@@ -40,6 +40,7 @@
 #include <openair1/PHY/CODING/nrSmallBlock/nr_small_block_defs.h>
 #include "common/utils/LOG/log.h"
 #include "common/utils/LOG/vcd_signal_dumper.h"
+#include "reverse_bits.h"
 #include "openair1/PHY/NR_REFSIG/nr_refsig.h"
 
 #include "T.h"