make AP6212 in bananpi m2 plus/zero work

BananaPi M2 zero and M2 plus boards contain an AP6212 module which
works well with the default AP6212 config. Create symlinks so that
they work out of the box.
Signed-off-by: Stefan Seyfried <seife+dev@b1-systems.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -2692,6 +2692,8 @@ Link: brcm/brcmfmac43362-sdio.lemaker,bananapro.txt -> brcmfmac43362-sdio.cubiet
 File: "brcm/brcmfmac43430a0-sdio.jumper-ezpad-mini3.txt"
 File: "brcm/brcmfmac43430a0-sdio.ONDA-V80 PLUS.txt"
 File: "brcm/brcmfmac43430-sdio.AP6212.txt"
+Link: brcm/brcmfmac43430-sdio.sinovoip,bpi-m2-plus.txt -> brcmfmac43430-sdio.AP6212.txt
+Link: brcm/brcmfmac43430-sdio.sinovoip,bpi-m2-zero.txt -> brcmfmac43430-sdio.AP6212.txt
 File: "brcm/brcmfmac43430-sdio.Hampoo-D2D3_Vi8A1.txt"
 File: "brcm/brcmfmac43430-sdio.MUR1DX.txt"
 File: "brcm/brcmfmac43430-sdio.raspberrypi,3-model-b.txt"