linux: add support for Linux 4.20

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux/Config.in

@@ -30,7 +30,7 @@ choice
 	prompt "Kernel version"
 
 config BR2_LINUX_KERNEL_LATEST_VERSION
-	bool "Latest version (4.19)"
+	bool "Latest version (4.20)"
 
 config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	bool "Latest CIP SLTS version (v4.4.154-cip28)"
@@ -120,7 +120,7 @@ endif
 
 config BR2_LINUX_KERNEL_VERSION
 	string
-	default "4.19.7" if BR2_LINUX_KERNEL_LATEST_VERSION
+	default "4.20" if BR2_LINUX_KERNEL_LATEST_VERSION
 	default "v4.4.154-cip28" if BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE \
 		if BR2_LINUX_KERNEL_CUSTOM_VERSION