crypto: img-hash - CRYPTO_DEV_IMGTEC_HASH should depend on HAS_DMA

If NO_DMA=y:

    drivers/built-in.o: In function `img_hash_write_via_dma_stop':
    img-hash.c:(.text+0xa2b822): undefined reference to `dma_unmap_sg'
    drivers/built-in.o: In function `img_hash_xmit_dma':
    img-hash.c:(.text+0xa2b8d8): undefined reference to `dma_map_sg'
    img-hash.c:(.text+0xa2b948): undefined reference to `dma_unmap_sg'

Also move the "depends" section below the "tristate" line while we're at
it.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/Kconfig

@@ -446,8 +446,9 @@ config CRYPTO_DEV_VMX
 source "drivers/crypto/vmx/Kconfig"
 
 config CRYPTO_DEV_IMGTEC_HASH
-	depends on MIPS || COMPILE_TEST
 	tristate "Imagination Technologies hardware hash accelerator"
+	depends on MIPS || COMPILE_TEST
+	depends on HAS_DMA
 	select CRYPTO_ALGAPI
 	select CRYPTO_MD5
 	select CRYPTO_SHA1