arm: convert Cygnus and NSP boards to Kconfig

Convert the bcm958300k and the bcm958622hr boards from "boards.cfg" to Kconfig.

Signed-off-by: Steve Rae <srae@broadcom.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4f26d28..71757e7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -425,6 +425,12 @@
 config TARGET_BCM28155_AP
 	bool "Support bcm28155_ap"
 
+config TARGET_BCM958300K
+	bool "Support bcm958300k"
+
+config TARGET_BCM958622HR
+	bool "Support bcm958622hr"
+
 config TARGET_ARNDALE
 	bool "Support arndale"
 
@@ -830,6 +836,8 @@
 source "board/bluewater/snapper9260/Kconfig"
 source "board/boundary/nitrogen6x/Kconfig"
 source "board/broadcom/bcm28155_ap/Kconfig"
+source "board/broadcom/bcm958300k/Kconfig"
+source "board/broadcom/bcm958622hr/Kconfig"
 source "board/buffalo/lsxl/Kconfig"
 source "board/calao/sbc35_a9g20/Kconfig"
 source "board/calao/tny_a9260/Kconfig"