Changeset 12c9dc8f in rtems for c/src/lib/libbsp/i386/shared

pc386: Eliminate pcibios.h and begin removal obsolete PCI BIOS API uses

This first step eliminates the following as public APIs for the pc386
BSP:

+ pcib_conf_read8
+ pcib_conf_read16
+ pcib_conf_read32
+ pcib_conf_write8
+ pcib_conf_write16
+ pcib_conf_write32

The if_fxp.c driver uses these enough where I provided local macros
to allow the code to be mostly unmodified. On other architectures
these names have been used privately. It will take multiple patches
to completely eliminate these symbols from the RTEMS source tree.

The focus of the first effort is just to eliminate these as a public
pc386 API so support can be added for systems without legacy PCI BIOS.