Move bsp_pretasking_hook() into files named bsppretaskinghook.c

[Joel Sherrill]

Over the past few years, we have split out the BSP required methods into their own files with consistent names. bsp_pretasking_hook() is next on the list.

$ grep -rl bsp_pretasking_hook .
./sparc/shared/bsppretaskinghook.c
./powerpc/score603e/startup/bspstart.c
./powerpc/beatnik/startup/bspstart.c
./powerpc/virtex5/startup/bspstart.c
./powerpc/virtex5/start/start.S
./powerpc/shared/startup/pretaskinghook.c
./powerpc/virtex4/startup/bspstart.c
./powerpc/virtex4/start/start.S
./powerpc/ep1a/startup/bspstart.c
./arm/lpc176x/startup/bspstart.c
./arm/lpc24xx/startup/bspstart.c
./bfin/bf537Stamp/startup/bspstart.c
./bfin/TLL6527M/startup/bspstart.c
./bfin/eZKit533/startup/bspstart.c
./shared/include/bootcard.h
./shared/bsppretaskinghook.c
./shared/bootcard.c

[Amar Takhar]

You really want to do this in milestone:4.11 and not milestone:5.0?

[Sebastian Huber]

The bsp_pretasking_hook() exists no longer, see #2408.

[Sebastian Huber]

Milestone renamed