msm: Kconfig: Correct typo in MSM_RPM_REGULATOR dependency on MSM_RPM

This option depends on "MSM_RPM", not "RPM".

Change-Id: Idc40478f4135f2e85bc0ee61d26de637c30ce567
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index ed43357..2c4edb8 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -1588,7 +1588,7 @@
 
 config MSM_RPM_REGULATOR
 	bool "RPM regulator driver"
-	depends on RPM && REGULATOR
+	depends on MSM_RPM && REGULATOR
 	help
 	  Compile in support for the RPM regulator driver, used for setting
 	  voltages and other parameters of the various power rails supplied