powerpc: Allow CPU selection of G4/74xx variant

GCC supports -mcpu=G4

This patch gives the opportunity to select ALTIVEC for this variant.

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mathieu Malaterre 2019-01-14 21:13:04 +01:00 • committed by Michael Ellerman
commit 9bd10b6498