Update crosstool-ng to assume linux kernel 5.4.70 (#23)

Author: Eeems

toolchain/crosstool-ng/crosstool.config

@@ -301,7 +301,7 @@ CT_LINUX_PATCH_ORDER="global"
 # CT_LINUX_V_5_9 is not set
 # CT_LINUX_V_5_8 is not set
 # CT_LINUX_V_5_7 is not set
-# CT_LINUX_V_5_4 is not set
+CT_LINUX_V_5_4=y
 # CT_LINUX_V_5_3 is not set
 # CT_LINUX_V_5_2 is not set
 # CT_LINUX_V_5_1 is not set
@@ -312,7 +312,7 @@ CT_LINUX_PATCH_ORDER="global"
 # CT_LINUX_V_4_17 is not set
 # CT_LINUX_V_4_16 is not set
 # CT_LINUX_V_4_15 is not set
-CT_LINUX_V_4_14=y
+# CT_LINUX_V_4_14 is not set
 # CT_LINUX_V_4_13 is not set
 # CT_LINUX_V_4_12 is not set
 # CT_LINUX_V_4_11 is not set
@@ -326,16 +326,16 @@ CT_LINUX_V_4_14=y
 # CT_LINUX_V_3_10 is not set
 # CT_LINUX_V_3_4 is not set
 # CT_LINUX_V_3_2 is not set
-CT_LINUX_VERSION="4.14.266"
+CT_LINUX_VERSION="5.4.70"
 CT_LINUX_MIRRORS="$(CT_Mirrors kernel.org linux ${CT_LINUX_VERSION})"
 CT_LINUX_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
 CT_LINUX_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
 CT_LINUX_ARCHIVE_FORMATS=".tar.xz .tar.gz"
 CT_LINUX_SIGNATURE_FORMAT="unpacked/.sign"
 CT_LINUX_5_12_or_older=y
 CT_LINUX_older_than_5_12=y
-CT_LINUX_5_3_or_older=y
-CT_LINUX_older_than_5_3=y
+CT_LINUX_5_4_or_older=y
+CT_LINUX_older_than_5_4=y
 CT_LINUX_later_than_4_8=y
 CT_LINUX_4_8_or_later=y
 CT_LINUX_later_than_3_7=y