Move PHY_MICREL and PHY_MICREL_KSZ90X1 to Kconfig

Signed-off-by: Alexandru Gagniuc <alex.g@adaptrum.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/pepper_defconfig b/configs/pepper_defconfig
index 08db1ad..7dd9e79 100644
--- a/configs/pepper_defconfig
+++ b/configs/pepper_defconfig
@@ -41,6 +41,8 @@
 CONFIG_EFI_PARTITION=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_PHYLIB=y
+CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_SYS_NS16550=y
 CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y