[libata] fix 'if(' and similar areas that lack whitespace

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --cc drivers/ata/pata_acpi.c
Simple merge

diff --cc drivers/ata/pata_optidma.c
Simple merge

diff --cc drivers/ata/pata_pdc2027x.c
Simple merge

diff --cc drivers/ata/pata_pdc202xx_old.c
Simple merge

diff --cc drivers/ata/pata_via.c
Simple merge

diff --cc drivers/ata/pata_winbond.c
Simple merge

diff --cc drivers/ata/sata_nv.c
Simple merge

diff --cc drivers/ata/sata_sx4.c
Simple merge