selftests/powerpc: Fix missing clean of pmu/lib.o

[Michael Ellerman]

On Wed, 2018-02-28 at 09:32:57 UTC, Michael Ellerman wrote:
> The tm-resched-dscr test links against pmu/lib.o, but we don't have a
> rule to clean pmu/lib.o. This can lead to a build break if you build
> for big endian and then little, or vice versa.
> 
> Fix it by making tm-resched-dscr depend on pmu/lib.c, causing the code
> to be built directly in, meaning no .o is generated.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>

Applied to powerpc fixes.

https://git.kernel.org/powerpc/c/b7abbd5a3533a31a1e7d4696ea275d

cheers