mt76: mt7915: rework starec TLV tags

Rework starec tags to the order which firmware expected. This also fixes
some weird behaviors during generating SPL of HE-MU.

Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>