efibootmgr: fix reverse dependency from efivar

efivar minimum gcc version dependency changed from 4.7 to 4.9 in the
last efivar bump, so this must be reflected in efibootmgr Config.in as
well.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/efibootmgr/Config.in

@@ -2,7 +2,7 @@ config BR2_PACKAGE_EFIBOOTMGR
 	bool "efibootmgr"
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 # efivar
 	depends on BR2_TOOLCHAIN_USES_GLIBC # efivar
-	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 # efivar
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # efivar
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS && \
 		!BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII # efivar
 	select BR2_PACKAGE_EFIVAR
@@ -14,9 +14,9 @@ config BR2_PACKAGE_EFIBOOTMGR
 
 	  https://github.com/rhinstaller/efibootmgr
 
-comment "efibootmgr requires a glibc toolchain w/ headers >= 3.12, gcc >= 4.7"
+comment "efibootmgr requires a glibc toolchain w/ headers >= 3.12, gcc >= 4.9"
 	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 || \
 		!BR2_TOOLCHAIN_USES_GLIBC || \\
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS && \
 		!BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII