csky: delay: Add function alignment

Specify 8 bytes alignment for the function __delay or we get bad
delay like udelay(10) will be 25us in fact.
Signed-off-by: Jialu Xu <xujialu@vimux.org>
Signed-off-by: Guo Ren <guoren@kernel.org>

arch/csky/lib/delay.c

@@ -5,7 +5,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 
-void __delay(unsigned long loops)
+void __aligned(8) __delay(unsigned long loops)
 {
 	asm volatile (
 		"mov r0, r0\n"