Rather than open coding the accessors for decoding peripheral IDs,
use the macros already provided.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
 
        host = mmc_priv(mmc);
        host->mmc = mmc;
-       /* Bits 12 thru 19 is the designer */
-       host->hw_designer = (dev->periphid >> 12) & 0xff;
-       /* Bits 20 thru 23 is the revison */
-       host->hw_revision = (dev->periphid >> 20) & 0xf;
+
+       host->hw_designer = amba_manf(dev);
+       host->hw_revision = amba_rev(dev);
        DBG(host, "designer ID = 0x%02x\n", host->hw_designer);
        DBG(host, "revision = 0x%01x\n", host->hw_revision);
+
        host->clk = clk_get(&dev->dev, NULL);
        if (IS_ERR(host->clk)) {
                ret = PTR_ERR(host->clk);