AOSCOS: MIPS: loongson3-memcpy: adapt to RAW_COPY_USER

Since commit 2260ea8 ("mips: switch to RAW_COPY_USER"), it is
required to export `__raw_copy_from_user' and `__raw_copy_from_user',
which are then referenced by certain kernel modules.

Export these symbols under `__memcpy', also remove the export for the now-
unused `__copy_user' symbol.

Fixes: "AOSCOS: memcpy optimization for loongson-3"
Signed-off-by: Mingcong Bai <[email protected]>

Signed-off-by: Kexy Biscuit <[email protected]>

Author: MingcongBai

arch/mips/loongson64/loongson3-memcpy.S

@@ -119,8 +119,10 @@ LEAF(memcpy)				/* a0=dst a1=src a2=len */
 EXPORT_SYMBOL(memcpy)
 	move	v0, dst
 .L__memcpy:
-FEXPORT(__copy_user)
-EXPORT_SYMBOL(__copy_user)
+FEXPORT(__raw_copy_from_user)
+EXPORT_SYMBOL(__raw_copy_from_user)
+FEXPORT(__raw_copy_to_user)
+EXPORT_SYMBOL(__raw_copy_to_user)
 	/* if less then 0x28 bytes */
 	sltu	t2, a2, 0x28
 	andi	t0, dst, 0xf