This is a simple copy of ipq40xx: speed up ath10k-caldata extraction commit 
/a69e101ed1169f562fc030a783cd997d3f066b16

Tested on DIR-825-B1

3768+0 records in
3768+0 records out
real    0m 11.90s
user    0m 0.03s
sys     0m 9.94s

1+0 records in
1+0 records out
real    0m 0.03s
user    0m 0.00s
sys     0m 0.03s

With this change eeprom extraction is fast enough to get working Wi-Fi after 
initial install.

Signed-off-by: Dmitry Tunin <hanipouspi...@gmail.com>
---
 target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git 
a/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom 
b/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
index 8b217d1..84e4d07 100644
--- a/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
+++ b/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
@@ -20,7 +20,7 @@ ath9k_eeprom_extract() {
        [ -n "$mtd" ] || \
                ath9k_eeprom_die "no mtd device found for partition $part"
 
-       dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 
2>/dev/null || \
+       dd if=$mtd of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count 
skip=$offset count=1 2>/dev/null || \
                ath9k_eeprom_die "failed to extract from $mtd"
 }
 
-- 
2.7.4


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