Reduce foot print of cycle1 -> cycle2 dma size change for fast adcs.

See merge request cds/advligorts!298

Old code for changing DMA size from the ( possibly smaller ) first cycle
was too expensive in some sense, causing momentary channel hopping on the
ADC when run at 65k and time_shift=0.

The new code just changes the size value of an already existing DMA
module instead of totally recreating it.

Shared memory cleanup 1

See merge request cds/advligorts!295

 * typeo in one of the commits left it as the invalid 'lingo_ioremap.h' instead of 'ioremap_selection.h'

Remove all references to ioremap_nocache and replace with the LIGO_IOREMAP macro.

See merge request cds/advligorts!292

 * ligo_iomap.h becomes iomap_selection.h to denote what it actually does.
 * LIGO_IOREMAP becomes simply IOREMAP to note that it isn't LIGO specific.

 * This allows the code to call the appropriate version if ioremap/ioremap_nocache depending on the kernel version.

Adding the use of the rts-cpu-isolator.h header, and calling the...

Closes #337

See merge request cds/advligorts!291

Fixing set_fe_code_idle( func ), func prototype needs to match the expected void (*)( void ) and NOT void * (*) (void*)

Adapt the rcg build process to use rts-cpu-isolator symvers file (if present)

See merge request cds/advligorts!290

Adding the use of the rts-cpu-isolator.h header, and calling the swappable/better named functions rts_isolator_exec()/rts_isolator_cleanup() instead of cpu up/down directly

Adding functions with more general real-time/isolation language because this functionality extends to more general core isolation use-cases.

Closes #334

See merge request cds/advligorts!289

 * work towards #335
 * modify find_module_symvers to user argparser and have a quiet option to make missing symvers files empty strings
 * update the src/epics/util/Makefile.in to pass the location of the rts cpu isolator symver file to feCodeGen.pl
 * update createKernelMakefile.pm to add the rts cpu isolator symvers file to the KBUILD_EXTRA_SYMBOLS for the module

Adding funtions with more general real-time/isolation language because this functionality extends to more general core isolation usecases.

 * rename from ligo_rt_* to rts_cpu_isolator_*

Close issue #333 rename ligo_rt to rts-cpu-isolator

Closes #333

See merge request cds/advligorts!288

Fix for 332, standalone_edcu does not reflect all of its created values into EPICS.

Closes #332

See merge request cds/advligorts!287

Six channels are created by the EDCU.  Only three were sent to both EPICS and the data stream.
 * Update the standalone_edcu to export the UPTIME, GPS, and DATA_RATE_KB_PER_S values in EPICS as well.
 * Minor formatting changes as per clang-format run.

Closes #332

Updates to gpstime/mbuf code to build on 5.10.x kernels.

See merge request cds/advligorts!283

Including a Linux kernel module that encapsulates the LIGO RT patch.

See merge request cds/advligorts!285

Python org

See merge request cds/advligorts!286

The ligo_rt module has the functionality of the real time patch, without the
requirement to rebuild the kernel.

remove old unused stuff

See merge request cds/advligorts!284

 * Use the proper version of ioremap for each kernel version.
 * Use a 64bit time call in newer kernels.
 * Only use unlocked ioctls as the interface in the mbuf/gpstime code.

Correct TIME 0 values for non-standard IOPs

See merge request cds/advligorts!282