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/pcm058_defconfig b/configs/pcm058_defconfig
index 980633d..b4c5423 100644
--- a/configs/pcm058_defconfig
+++ b/configs/pcm058_defconfig
@@ -50,5 +50,7 @@
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y
+CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_DM_THERMAL=y
 CONFIG_OF_LIBFDT=y