kbuild: use INSTALLKERNEL to select customized installkernel script

Replace the use of CROSS_COMPILE to select a customized
installkernel script with the possibility to set INSTALLKERNEL
to select a custom installkernel script when running make:

    make INSTALLKERNEL=arm-installkernel install

With this patch we are now more consistent across
different architectures - they did not all support use
of CROSS_COMPILE.

The use of CROSS_COMPILE was a hack as this really belongs
to gcc/binutils and the installkernel script does not change
just because we change toolchain.

The use of CROSS_COMPILE caused troubles with an upcoming patch
that saves CROSS_COMPILE when a kernel is built - it would no
longer be installable.
[Thanks to Peter Z. for this hint]

This patch undos what Ian did in commit:

  0f8e2d62fa04441cd12c08ce521e84e5bd3f8a46
  ("use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh")

The patch has been lightly tested on x86 only - but all changes
looks obvious.

Acked-by: Peter Zijlstra <[email protected]>
Acked-by: Mike Frysinger <[email protected]> [blackfin]
Acked-by: Russell King <[email protected]> [arm]
Acked-by: Paul Mundt <[email protected]> [sh]
Acked-by: "H. Peter Anvin" <[email protected]> [x86]
Cc: Ian Campbell <[email protected]>
Cc: Tony Luck <[email protected]> [ia64]
Cc: Fenghua Yu <[email protected]> [ia64]
Cc: Hirokazu Takata <[email protected]> [m32r]
Cc: Geert Uytterhoeven <[email protected]> [m68k]
Cc: Kyle McMartin <[email protected]> [parisc]
Cc: Benjamin Herrenschmidt <[email protected]> [powerpc]
Cc: Martin Schwidefsky <[email protected]> [s390]
Cc: Thomas Gleixner <[email protected]> [x86]
Cc: Ingo Molnar <[email protected]> [x86]
Signed-off-by: Sam Ravnborg <[email protected]>

0 files changed, 0 insertions, 0 deletions