Rationale: TM4C1294NC is ambiguous:
TM4C1294NCPDT is a 128-TQFP
TM4C1294NCZAD is a 212-NFBGA
The TM4C1294NC part currently supported by NuttX is the TM4C1294NCPDT used on the TI EK-TM4C1294XL "Connected LaunchPad" (see configs/tm4c1294-launchpad). To ensure the correct part is fully specified, this commit updates all TM4C1294NC identifiers to TM4C1294NCPDT.
Rename:
CONFIG_ARCH_CHIP_TM4C1294NC to CONFIG_ARCH_CHIP_TM4C1294NCPDT
ARCH_CHIP_TM4C1294NC to ARCH_CHIP_TM4C1294NCPDT
TM4C1294NC to TM4C1294NCPDT