mfd: Renamed ab3100.h to abx500.h

The goal here is to make way for a more general interface for the
analog baseband chips ab3100 ab3550 ab550 and future chips.

This patch have been divided into two parts since both changing name
and content of a file is not recommended in git.

Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/regulator/ab3100.c b/drivers/regulator/ab3100.c
index 1afd008..04ca7f6 100644
--- a/drivers/regulator/ab3100.c
+++ b/drivers/regulator/ab3100.c
@@ -16,7 +16,7 @@
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
-#include <linux/mfd/ab3100.h>
+#include <linux/mfd/abx500.h>
 
 /* LDO registers and some handy masking definitions for AB3100 */
 #define AB3100_LDO_A		0x40