arch/powerpc: remove depends on CONFIG_EXPERIMENTAL

The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <paulus@samba.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/powerpc/Kconfig

@@ -334,7 +334,7 @@ config SWIOTLB
 
 config HOTPLUG_CPU
 	bool "Support for enabling/disabling CPUs"
-	depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
+	depends on SMP && HOTPLUG && (PPC_PSERIES || \
 	PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 	---help---
 	  Say Y here to be able to disable and re-enable individual
@@ -356,8 +356,8 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE
 	def_bool y
 
 config KEXEC
-	bool "kexec system call (EXPERIMENTAL)"
-	depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
+	bool "kexec system call"
+	depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
@@ -852,8 +852,8 @@ config LOWMEM_CAM_NUM
 	default 3
 
 config DYNAMIC_MEMSTART
-	bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
+	bool "Enable page aligned dynamic load address for kernel"
+	depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 	select NONSTATIC_KERNEL
 	help
 	  This option enables the kernel to be loaded at any page aligned
@@ -870,8 +870,8 @@ config DYNAMIC_MEMSTART
 	  This option is overridden by CONFIG_RELOCATABLE
 
 config RELOCATABLE
-	bool "Build a relocatable kernel (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
+	bool "Build a relocatable kernel"
+	depends on ADVANCED_OPTIONS && FLATMEM && 44x
 	select NONSTATIC_KERNEL
 	help
 	  This builds a kernel image that is capable of running at the