Barefoot build is broken due to pcie.yaml relocation in #6475

[vboykox]

Description

#6475 breaks image build with following log (Azure barefoot build 132):

[2021-02-23T04:21:56.586Z] cp -r /sonic/platform/barefoot/sonic-platform-modules-bfn-montara/plugins/* debian/sonic-platform-modules-bfn-montara/usr/share/sonic/device/x86_64-accton_wedge100bf_32x-r0/plugins/
[2021-02-23T04:21:56.586Z] cp: cannot stat '/sonic/platform/barefoot/sonic-platform-modules-bfn-montara/plugins/*': No such file or directory
[2021-02-23T04:21:56.586Z] make[2]: *** [debian/rules:28: override_dh_auto_install] Error 1
[2021-02-23T04:21:56.586Z] make[2]: Leaving directory '/sonic/platform/barefoot/sonic-platform-modules-bfn-montara'
[2021-02-23T04:21:56.586Z] make[1]: *** [debian/rules:12: binary] Error 2
[2021-02-23T04:21:56.586Z] make[1]: Leaving directory '/sonic/platform/barefoot/sonic-platform-modules-bfn-montara'

@sujinmkang
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