mfd: db8500-prcmu: Remove unused *prcmu_set_ddr_opp() calls

There are no call sites for these functions.  Strip them out.
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/db8500-prcmu.c

@@ -938,25 +938,6 @@ int db8500_prcmu_get_ddr_opp(void)
 	return readb(PRCM_DDR_SUBSYS_APE_MINBW);
 }
 
-/**
- * db8500_set_ddr_opp - set the appropriate DDR OPP
- * @opp: The new DDR operating point to which transition is to be made
- * Returns: 0 on success, non-zero on failure
- *
- * This function sets the operating point of the DDR.
- */
-static bool enable_set_ddr_opp;
-int db8500_prcmu_set_ddr_opp(u8 opp)
-{
-	if (opp < DDR_100_OPP || opp > DDR_25_OPP)
-		return -EINVAL;
-	/* Changing the DDR OPP can hang the hardware pre-v21 */
-	if (enable_set_ddr_opp)
-		writeb(opp, PRCM_DDR_SUBSYS_APE_MINBW);
-
-	return 0;
-}
-
 /* Divide the frequency of certain clocks by 2 for APE_50_PARTLY_25_OPP. */
 static void request_even_slower_clocks(bool enable)
 {

include/linux/mfd/db8500-prcmu.h

@@ -538,7 +538,6 @@ int db8500_prcmu_get_arm_opp(void);
 int db8500_prcmu_set_ape_opp(u8 opp);
 int db8500_prcmu_get_ape_opp(void);
 int db8500_prcmu_request_ape_opp_100_voltage(bool enable);
-int db8500_prcmu_set_ddr_opp(u8 opp);
 int db8500_prcmu_get_ddr_opp(void);
 
 u32 db8500_prcmu_read(unsigned int reg);
@@ -594,11 +593,6 @@ static inline int prcmu_release_usb_wakeup_state(void)
 	return 0;
 }
 
-static inline int db8500_prcmu_set_ddr_opp(u8 opp)
-{
-	return 0;
-}
-
 static inline int db8500_prcmu_get_ddr_opp(void)
 {
 	return DDR_100_OPP;

include/linux/mfd/dbx500-prcmu.h

@@ -269,10 +269,6 @@ unsigned long prcmu_clock_rate(u8 clock);
 long prcmu_round_clock_rate(u8 clock, unsigned long rate);
 int prcmu_set_clock_rate(u8 clock, unsigned long rate);
 
-static inline int prcmu_set_ddr_opp(u8 opp)
-{
-	return db8500_prcmu_set_ddr_opp(opp);
-}
 static inline int prcmu_get_ddr_opp(void)
 {
 	return db8500_prcmu_get_ddr_opp();
@@ -489,11 +485,6 @@ static inline int prcmu_get_arm_opp(void)
 	return ARM_100_OPP;
 }
 
-static inline int prcmu_set_ddr_opp(u8 opp)
-{
-	return 0;
-}
-
 static inline int prcmu_get_ddr_opp(void)
 {
 	return DDR_100_OPP;