sam-ba: fix sam-ba symbolic link
Following the removal of $(HOST_DIR)/usr, the symbolic link from
$(HOST_DIR)/bin/sam-ba/ to $(HOST_DIR)/opt/sam-ba/sam-ba was broken,
so we fix this.
In addition, sam-ba being prebuilt, it comes in two separates
binaries, one for x86 and the other for x86_64, so we take this into
account as well.
Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
[Thomas:
- add spaces around = signs
- rework commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>