dmaengine: fsl-dpaa2-qdma: Drop unused mc_enc()

Static function mc_enc() is not used, W=1 build:

dpdmai.c:51:19: error: unused function 'mc_enc' [-Werror,-Wunused-function]

Fixes: 26a4d2aedac2 ("dmaengine: fsl-dpaa2-qdma: Remove unused function dpdmai_create()")
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/fsl-dpaa2-qdma/dpdmai.c

···
 	__le32 dpdmai_id;
 } __packed;
 
-static inline u64 mc_enc(int lsoffset, int width, u64 val)
-{
-	return (val & MAKE_UMASK64(width)) << lsoffset;
-}
-
 /**
  * dpdmai_open() - Open a control session for the specified object
  * @mc_io:	Pointer to MC portal's I/O object