spi: replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --cc drivers/spi/omap_uwire.c
Simple merge

diff --cc drivers/spi/spi_bitbang.c
Simple merge

diff --cc drivers/spi/spi_mpc83xx.c
Simple merge

diff --cc drivers/spi/spi_s3c24xx.c
Simple merge

diff --cc drivers/spi/xilinx_spi.c
Simple merge