pps, ptp: Remove dependencies on EXPERIMENTAL

These are now established subsystems, and we want drivers to be able
to select PPS and PTP_1588_CLOCK without depending on EXPERIMENTAL.
Further, the use of EXPERIMENTAL is now deprecated in general.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index 0cafe4f..9e49217 100644
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -123,7 +123,7 @@
 config IGB_PTP
 	bool "PTP Hardware Clock (PHC)"
 	default n
-	depends on IGB && EXPERIMENTAL
+	depends on IGB
 	select PPS
 	select PTP_1588_CLOCK
 	---help---
@@ -225,7 +225,7 @@
 config IXGBE_PTP
 	bool "PTP Clock Support"
 	default n
-	depends on IXGBE && EXPERIMENTAL
+	depends on IXGBE
 	select PPS
 	select PTP_1588_CLOCK
 	---help---
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig b/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
index 5296cc8..9867bc6 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
@@ -26,7 +26,6 @@
 config PCH_PTP
 	bool "PCH PTP clock support"
 	default n
-	depends on EXPERIMENTAL
 	select PPS
 	select PTP_1588_CLOCK
 	select PTP_1588_CLOCK_PCH
diff --git a/drivers/pps/Kconfig b/drivers/pps/Kconfig
index 258ca59..982d16b 100644
--- a/drivers/pps/Kconfig
+++ b/drivers/pps/Kconfig
@@ -6,7 +6,6 @@
 
 config PPS
 	tristate "PPS support"
-	depends on EXPERIMENTAL
 	---help---
 	  PPS (Pulse Per Second) is a special pulse provided by some GPS
 	  antennae. Userland can use it to get a high-precision time
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index ffdf712..a6e4b7c 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -9,7 +9,6 @@
 
 config PTP_1588_CLOCK
 	tristate "PTP clock support"
-	depends on EXPERIMENTAL
 	depends on PPS
 	help
 	  The IEEE 1588 standard defines a method to precisely