linux: add shorter shortcuts

We only have one Linux kernel package, and "linux26-" is an anachronism
in today's world.  So add useful "linux-%" shortcuts to the "linux26-%".

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

docs/README

@@ -53,7 +53,7 @@ $ make HOSTCC=gcc-4.3.orig HOSTCXX=gcc-4.3-mine
 
 Depending on your configuration, there are some targets you can use to
 use menuconfig of certain packages. This includes:
-$ make HOSTCC=gcc-4.3 linux26-menuconfig
+$ make HOSTCC=gcc-4.3 linux-menuconfig
 $ make HOSTCC=gcc-4.3 uclibc-menuconfig
 $ make HOSTCC=gcc-4.3 busybox-menuconfig
 

docs/buildroot.html

@@ -434,7 +434,7 @@
 
     <p>The Linux kernel configuration can be customized just like
     <a href="#custom_busybox">BusyBox</a> and
-    <a href="#custom_uclibc">uClibc</a> using <code>make linux26-menuconfig
+    <a href="#custom_uclibc">uClibc</a> using <code>make linux-menuconfig
     </code>. Make sure you have enabled the kernel build in <code>make
     menuconfig</code> first. Once done, run <code>make</code> to (re)build
     everything.</p>

linux/linux.mk

@@ -179,3 +179,6 @@ endif
 endif
 
 endif
+
+linux-%:
+	$(MAKE) $(subst linux-,linux26-,$@)