ipq806x: change compiler flags to arm cortex-a15

Signed-off-by: Josh Bendavid <[email protected]>

target/linux/ipq806x/Makefile

@@ -6,7 +6,7 @@ ARCH:=arm
 BOARD:=ipq806x
 BOARDNAME:=Qualcomm Atheros IPQ806X
 FEATURES:=squashfs nand ubifs fpu
-CPU_TYPE:=cortex-a9
+CPU_TYPE:=cortex-a15
 CPU_SUBTYPE:=neon-vfpv4
 MAINTAINER:=John Crispin <[email protected]>