Use HIDDEN_JUMPTARGET define instead of __GI_ directly in AVR32 files

This patch uses the HIDDEN_JUMPTARGET instead of the __GI_ prefix in AVR32
assembler files. This is done to follow the code style in uClibc.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>

libc/string/avr32/bcopy.S

@@ -19,7 +19,7 @@ bcopy:
        eor     r11, r12
        eor     r12, r11
        eor     r11, r12
-       rjmp    __GI_memmove
+       rjmp    HIDDEN_JUMPTARGET(memmove)
 
        .size   bcopy, . - bcopy
 

libc/string/avr32/memmove.S

@@ -15,7 +15,7 @@
        .type   memmove, @function
 memmove:
        cp.w    src, dst
-       brge    __GI_memcpy
+       brge    HIDDEN_JUMPTARGET(memcpy)
 
        add     dst, len
        add     src, len

libc/sysdeps/linux/avr32/bsd-_setjmp.S

@@ -12,5 +12,5 @@
        .align  1
 _setjmp:
        mov     r11, 0
-       bral    __GI___sigsetjmp
+       bral    HIDDEN_JUMPTARGET(__sigsetjmp)
        .size   _setjmp, . - _setjmp

libc/sysdeps/linux/avr32/bsd-setjmp.S

@@ -12,5 +12,5 @@
        .align  1
 setjmp:
        mov     r11, 1
-       bral    __GI___sigsetjmp
+       bral    HIDDEN_JUMPTARGET(__sigsetjmp)
        .size   setjmp, . - setjmp