Porting DDI 7 DSP files to DDI 8

All DDI 8 drivers are treated as autoconfigured, dynamically-loaded drivers. This implies the following:

• No static linkage structures such as Ftab(DSP/4dsp) entries are generated for these drivers.

• For drivers that are statically linked (in other words, called during system initialization rather than when first accessed by a running process), initialization information is still picked up from the driver's _load(D2) entry point routine. Such drivers are identified by the $static flag in the driver's Master(DSP/4dsp) file.

• No config.h preprocessor symbols for major numbers are generated.