Code for creating single byte llis is present at several places. Create a
routine to avoid code redundancy.

Also, we don't need one lli per single byte transfer, we can have single lli to
do all single byte transfer.

Signed-off-by: Viresh Kumar <redacted>
---
 drivers/dma/amba-pl08x.c |   61 +++++++++++++++++++++++++---------------------
 1 files changed, 33 insertions(+), 28 deletions(-)

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 3b7357e..590397d 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c

@@ -552,6 +552,14 @@ static void pl08x_fill_lli_for_desc(struct pl08x_lli_build_data *bd,
 	bd->remainder -= len;
 }
 
+static inline void prep_byte_width_lli(struct pl08x_lli_build_data *bd,
+		u32 *cctl, u32 len, int num_llis, size_t *total_bytes)
+{
+		*cctl = pl08x_cctl_bits(*cctl, 1, 1, len);
+		pl08x_fill_lli_for_desc(bd, num_llis, len, *cctl);
+		(*total_bytes) += len;