linux: drop deprected hifn795x patch

this was needed years ago by the OCF

Signed-off-by: John Crispin <john@phrozen.org>

target/linux/generic/patches-4.4/870-hifn795x_byteswap.patch

@@ -1,17 +0,0 @@
---- a/drivers/crypto/hifn_795x.c
-+++ b/drivers/crypto/hifn_795x.c
-@@ -680,12 +680,12 @@ static inline u32 hifn_read_1(struct hif
- 
- static inline void hifn_write_0(struct hifn_device *dev, u32 reg, u32 val)
- {
--	writel((__force u32)cpu_to_le32(val), dev->bar[0] + reg);
-+	writel(val, dev->bar[0] + reg);
- }
- 
- static inline void hifn_write_1(struct hifn_device *dev, u32 reg, u32 val)
- {
--	writel((__force u32)cpu_to_le32(val), dev->bar[1] + reg);
-+	writel(val, dev->bar[1] + reg);
- }
- 
- static void hifn_wait_puc(struct hifn_device *dev)