linux: bump cip version to v4.4.75-cip6

Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

linux/Config.in

@@ -29,7 +29,7 @@ config BR2_LINUX_KERNEL_LATEST_VERSION
 	bool "Latest version (4.12.4)"
 
 config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
-	bool "Latest CIP SLTS version (v4.4.55-cip3)"
+	bool "Latest CIP SLTS version (v4.4.75-cip6)"
 	help
 	  CIP launched in the spring of 2016 to address the needs of
 	  organizations in industries such as power generation and
@@ -117,7 +117,7 @@ endif
 config BR2_LINUX_KERNEL_VERSION
 	string
 	default "4.12.4" if BR2_LINUX_KERNEL_LATEST_VERSION
-	default "v4.4.55-cip3" if BR2_LINUX_KERNEL_LATEST_CIP_VERSION
+	default "v4.4.75-cip6" if BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE \
 		if BR2_LINUX_KERNEL_CUSTOM_VERSION
 	default "custom" if BR2_LINUX_KERNEL_CUSTOM_TARBALL