powerpc: Fix build failure when CONFIG_USB=y

We are enabling USB unconditionally which results in following build failure

drivers/built-in.o: In function `tb_drom_read':
(.text+0x1b62b70): undefined reference to `usb_speed_string'
make: *** [vmlinux] Error

Enable USB only if USB_SUPPORT is set to avoid such failures

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Acked-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 3e7deb2aaf5a63664d988c08c3017370880230d9..82f2da28cd2775c4051a60d3f4014e25148f892c 100644 (file)
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -215,7 +215,7 @@ config AKEBONO
        select NET_VENDOR_IBM
        select IBM_EMAC_EMAC4
        select IBM_EMAC_RGMII_WOL
-       select USB
+       select USB if USB_SUPPORT
        select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
        select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
        select MMC_SDHCI