Benjamin Gray 4ecd0868c5 selftests/powerpc: Pass make context to children
Make supports passing the 'jobserver' (parallel make support) to child
invocations of make when either
	1. The target command uses $(MAKE) directly
	2. The command starts with '+'

This context is not passed through expansions that result in $(MAKE), so
the macros used in several places fail to pass on the jobserver context.
Warnings are also raised by the child mentioning this.

Prepend macros lines that invoke $(MAKE) with '+' to allow passing the
jobserver context to these children.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230228000709.124727-3-bgray@linux.ibm.com
2023-03-30 23:35:43 +11:00
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