adding comment for uart_wait_idle to warn about a possible dead lock

adding UartFifoControl and UartInterruptIdentification for the UART_IIR_FCR_0 register ...

adding reference manual intem numbers for register enums

minor style fixes

change multiline comments, they game (only?) me strange spacing errors in the VS info popup

adding UartVendorStatus, UartLineStatus and UartLineControl ...

refactor defines
edited uart_wait_idle() second parameter type to UartVendorStatus

Loader: Greatly simplify mapping logic, add CodeMemory mapper.

Loader: Add NRRInfo to RegisteredProcess, refactor Registration::

Loader: Service ldr:ro on <= 2.3.0

Loader: Implement ldr:ro->Initialize()

Loader: Push ldr:ro stub.

Loader: is_64_bit -> is_64_bit_addspace

Loader: Save process->is_64_bit as prep for ldr:ro

Change read_sd_file semantics to return size read.

Boot: Fix JSON mappings to be RW (instead of RO)

Boot: Initial skeleton and 1.0.0 GPIO voltage switch.

Fusee: Fix BisPartition enum to correctly identify partitions. ...

* BisPartition_t was missing SAFE, meaning User and System were using wrong key_source

* Normalize tabs to spaces

* Merge User and System BisPartition_t because they are the same key anyway

* Remove extra newline

ENUMs for APB Slave Security Enable registers (#67) ...

Exosphere: add enums for the APB_MISC_SECURE registers.

Stratosphere: Add .jsons for loader, sm

Loader: Properly map BSS as rw.

Loader: Fix bugs in CreateProcess(), which now succeeds on hardware (1.0.0)

Loader: Fix type definitions in picosha2.hpp

Loader: Finish Loader::CreateProcess().

Loader: Include picosha2 as a SHA256 generator.

Loader: Implement all remaining parts of CreateProcess except LoadNsoSegment.

Loader: Implement argument passing.

Loader: Implement most of LoadNsosIntoProcessMemory

Loader: Implement RandomUtils (for ASLR)

Loader: Implement NSO Extent calculation (note: ASLR currently disabled due to lack of entropy source.)

Loader: Implement mappable-region locating functions.

Clean up Nso fopen semantics